Add: expose hot & live reload, remote debug, profiling
Add: expose hot & live reload, remote debug, profiling

Summary:
Explain the **motivation** for making this change. What existing problem does the pull request solve?

- Being able to call these from JS is really useful in envs where action sheets are not available (eg: App Extensions). I made the functions act as explicit toggles, this way it's easy to set the wanted behavior.

**Test plan (required)**
- I tested the functions manually.

![Remote debug from an iMessage Application](https://cloud.githubusercontent.com/assets/4422516/17445198/976ebfe0-5af8-11e6-885f-1b40f9518aab.png)
Closes https://github.com/facebook/react-native/pull/9242

Differential Revision: D3749568

fbshipit-source-id: 2cea1d609dc792aec73d4bcf1eae07575725b4b7

forcedotcom/react-native,janicduplessis/react-native,thotegowda/react-native,gre/react-native,hoastoolshop/react-native,cosmith/react-native,ptmt/react-native-macos,myntra/react-native,DanielMSchmidt/react-native,foghina/react-native,gre/react-native,cdlewis/react-native,Andreyco/react-native,satya164/react-native,doochik/react-native,thotegowda/react-native,clozr/react-native,aljs/react-native,aljs/react-native,happypancake/react-native,cdlewis/react-native,shrutic/react-native,exponentjs/react-native,ptmt/react-native-macos,myntra/react-native,ankitsinghania94/react-native,PlexChat/react-native,hoastoolshop/react-native,peterp/react-native,christopherdro/react-native,aljs/react-native,DannyvanderJagt/react-native,Andreyco/react-native,aljs/react-native,dikaiosune/react-native,christopherdro/react-native,xiayz/react-native,csatf/react-native,gilesvangruisen/react-native,xiayz/react-native,facebook/react-native,salanki/react-native,myntra/react-native,csatf/react-native,tszajna0/react-native,imjerrybao/react-native,gre/react-native,eduardinni/react-native,jevakallio/react-native,dikaiosune/react-native,imjerrybao/react-native,frantic/react-native,exponentjs/react-native,brentvatne/react-native,cdlewis/react-native,adamjmcgrath/react-native,shrutic123/react-native,javache/react-native,DanielMSchmidt/react-native,htc2u/react-native,farazs/react-native,naoufal/react-native,Guardiannw/react-native,shrutic123/react-native,happypancake/react-native,tszajna0/react-native,lprhodes/react-native,javache/react-native,makadaw/react-native,facebook/react-native,Swaagie/react-native,cosmith/react-native,hoastoolshop/react-native,nickhudkins/react-native,foghina/react-native,skevy/react-native,charlesvinette/react-native,Maxwell2022/react-native,DanielMSchmidt/react-native,tszajna0/react-native,satya164/react-native,eduardinni/react-native,nickhudkins/react-native,makadaw/react-native,exponentjs/react-native,PlexChat/react-native,javache/react-native,imjerrybao/react-native,gitim/react-native,hoangpham95/react-native,callstack-io/react-native,aljs/react-native,alin23/react-native,Purii/react-native,mironiasty/react-native,ptomasroos/react-native,hoangpham95/react-native,Swaagie/react-native,callstack-io/react-native,Livyli/react-native,tgoldenberg/react-native,tsjing/react-native,Bhullnatik/react-native,Ehesp/react-native,DannyvanderJagt/react-native,jadbox/react-native,orenklein/react-native,cpunion/react-native,esauter5/react-native,esauter5/react-native,Livyli/react-native,shrutic/react-native,salanki/react-native,tgoldenberg/react-native,janicduplessis/react-native,charlesvinette/react-native,callstack-io/react-native,Swaagie/react-native,Swaagie/react-native,negativetwelve/react-native,doochik/react-native,imDangerous/react-native,tadeuzagallo/react-native,christopherdro/react-native,Guardiannw/react-native,tgoldenberg/react-native,jevakallio/react-native,alin23/react-native,brentvatne/react-native,gitim/react-native,lprhodes/react-native,facebook/react-native,Ehesp/react-native,gilesvangruisen/react-native,jasonnoahchoi/react-native,negativetwelve/react-native,alin23/react-native,makadaw/react-native,salanki/react-native,exponent/react-native,shrutic123/react-native,ptmt/react-native-macos,eduardinni/react-native,xiayz/react-native,naoufal/react-native,imjerrybao/react-native,rickbeerendonk/react-native,shrutic/react-native,ankitsinghania94/react-native,nickhudkins/react-native,CodeLinkIO/react-native,christopherdro/react-native,thotegowda/react-native,naoufal/react-native,hoangpham95/react-native,jevakallio/react-native,csatf/react-native,Maxwell2022/react-native,thotegowda/react-native,kesha-antonov/react-native,Livyli/react-native,tadeuzagallo/react-native,myntra/react-native,janicduplessis/react-native,christopherdro/react-native,orenklein/react-native,skevy/react-native,ndejesus1227/react-native,brentvatne/react-native,DannyvanderJagt/react-native,DannyvanderJagt/react-native,PlexChat/react-native,CodeLinkIO/react-native,adamjmcgrath/react-native,Maxwell2022/react-native,rickbeerendonk/react-native,csatf/react-native,skevy/react-native,kesha-antonov/react-native,eduardinni/react-native,salanki/react-native,tadeuzagallo/react-native,kesha-antonov/react-native,imjerrybao/react-native,brentvatne/react-native,charlesvinette/react-native,eduardinni/react-native,tsjing/react-native,gitim/react-native,jadbox/react-native,Livyli/react-native,PlexChat/react-native,exponent/react-native,farazs/react-native,tszajna0/react-native,jadbox/react-native,kesha-antonov/react-native,imDangerous/react-native,Swaagie/react-native,foghina/react-native,tgoldenberg/react-native,Bhullnatik/react-native,clozr/react-native,myntra/react-native,PlexChat/react-native,shrutic123/react-native,jaggs6/react-native,DanielMSchmidt/react-native,farazs/react-native,Andreyco/react-native,csatf/react-native,doochik/react-native,jadbox/react-native,Swaagie/react-native,csatf/react-native,mironiasty/react-native,charlesvinette/react-native,hoangpham95/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