Add updated type-spec to Emacs skeletons of OTP behaviours
Add updated type-spec to Emacs skeletons of OTP behaviours

The changes are based on the latest versions of following modules
and are also similar to gen_statem Emacs skeleton. Note that the
gen_fsm is not updated because it is deprecated.

application:
* add/update type-spec for all callbacks
* add start_phase/3 callback
* add prep_stop/1 callback
* add config_change/3 callback

supervisor:
* add/update type-spec for all callbacks

supervisor_bridge:
* add/update type-spec for all callbacks

gen_server:
* add/update type-spec for all callbacks
* add format_status/2 callback

gen_event:
* add/update type-spec for all callbacks
* add format_status/2 callback

rlipscombe/otp,mikpe/otp,potatosalad/otp,fenollp/otp,electricimp/otp,tuncer/otp,vinoski/otp,vladdu/otp,jj1bdx/otp,getong/otp,cobusc/otp,bjorng/otp,kvakvs/otp,fenollp/otp,getong/otp,kvakvs/otp,mikpe/otp,bsmr-erlang/otp,tuncer/otp,cobusc/otp,dumbbell/otp,vladdu/otp,fenollp/otp,uabboli/otp,bsmr-erlang/otp,legoscia/otp,potatosalad/otp,g-andrade/otp,bjorng/otp,bsmr-erlang/otp,lrascao/otp,dgud/otp,tuncer/otp,lrascao/otp,g-andrade/otp,bsmr-erlang/otp,jj1bdx/otp,cobusc/otp,vladdu/otp,emacsmirror/erlang,RoadRunnr/otp,legoscia/otp,saleyn/otp,rlipscombe/otp,isvilen/otp,erlang/otp,RoadRunnr/otp,cobusc/otp,emacsmirror/erlang,rlipscombe/otp,RaimoNiskanen/otp,erlang/otp,RoadRunnr/otp,isvilen/otp,saleyn/otp,dumbbell/otp,aboroska/otp,getong/otp,RoadRunnr/otp,RaimoNiskanen/otp,jj1bdx/otp,saleyn/otp,emacsmirror/erlang,RoadRunnr/otp,RaimoNiskanen/otp,jj1bdx/otp,dumbbell/otp,vinoski/otp,g-andrade/otp,dgud/otp,vladdu/otp,erlang/otp,saleyn/otp,erlang/otp,ferd/otp,RaimoNiskanen/otp,getong/otp,potatosalad/otp,mikpe/otp,legoscia/otp,getong/otp,jj1bdx/otp,mikpe/otp,jj1bdx/otp,isvilen/otp,g-andrade/otp,dumbbell/otp,vladdu/otp,RaimoNiskanen/otp,tuncer/otp,uabboli/otp,rlipscombe/otp,vladdu/otp,dgud/otp,dgud/otp,emacsmirror/erlang,aboroska/otp,ferd/otp,vinoski/otp,mikpe/otp,getong/otp,electricimp/otp,tuncer/otp,isvilen/otp,vladdu/otp,rlipscombe/otp,vinoski/otp,emacsmirror/erlang,bsmr-erlang/otp,tuncer/otp,kvakvs/otp,ferd/otp,dgud/otp,electricimp/otp,aboroska/otp,electricimp/otp,dgud/otp,isvilen/otp,g-andrade/otp,getong/otp,dumbbell/otp,potatosalad/otp,bjorng/otp,isvilen/otp,ferd/otp,vinoski/otp,lrascao/otp,lrascao/otp,rlipscombe/otp,erlang/otp,ferd/otp,dgud/otp,fenollp/otp,vinoski/otp,legoscia/otp,mikpe/otp,rlipscombe/otp,uabboli/otp,jj1bdx/otp,g-andrade/otp,bjorng/otp,vinoski/otp,aboroska/otp,ferd/otp,RoadRunnr/otp,erlang/otp,potatosalad/otp,isvilen/otp,RaimoNiskanen/otp,cobusc/otp,kvakvs/otp,RoadRunnr/otp,electricimp/otp,rlipscombe/otp,emacsmirror/erlang,bjorng/otp,tuncer/otp,dumbbell/otp,lrascao/otp,kvakvs/otp,isvilen/otp,electricimp/otp,erlang/otp,emacsmirror/erlang,getong/otp,jj1bdx/otp,rlipscombe/otp,RaimoNiskanen/otp,legoscia/otp,erlang/otp,mikpe/otp,tuncer/otp,emacsmirror/erlang,kvakvs/otp,legoscia/otp,lrascao/otp,saleyn/otp,emacsmirror/erlang,aboroska/otp,bsmr-erlang/otp,getong/otp,fenollp/otp,jj1bdx/otp,RoadRunnr/otp,vinoski/otp,kvakvs/otp,aboroska/otp,kvakvs/otp,g-andrade/otp,bsmr-erlang/otp,erlang/otp,ferd/otp,cobusc/otp,dumbbell/otp,uabboli/otp,g-andrade/otp,RoadRunnr/otp,uabboli/otp,vladdu/otp,bjorng/otp,RaimoNiskanen/otp,lrascao/otp,potatosalad/otp,jj1bdx/otp,legoscia/otp,uabboli/otp,dumbbell/otp,vladdu/otp,saleyn/otp,mikpe/otp,vinoski/otp,tuncer/otp,saleyn/otp,potatosalad/otp,potatosalad/otp,lrascao/otp,fenollp/otp,dgud/otp,bsmr-erlang/otp,bjorng/otp,dgud/otp,legoscia/otp,mikpe/otp,cobusc/otp,uabboli/otp,legoscia/otp,fenollp/otp,electricimp/otp,uabboli/otp,electricimp/otp,g-andrade/otp,erlang/otp,RaimoNiskanen/otp,aboroska/otp,lrascao/otp,bjorng/otp,cobusc/otp,vinoski/otp,fenollp/otp,saleyn/otp,emacsmirror/erlang,ferd/otp,ferd/otp,kvakvs/otp,saleyn/otp,bsmr-erlang/otp,rlipscombe/otp,potatosalad/otp,dgud/otp,aboroska/otp,uabboli/otp,dumbbell/otp,electricimp/otp,bjorng/otp,potatosalad/otp,dumbbell/otp,isvilen/otp,fenollp/otp,getong/otp,aboroska/otp,g-andrade/otp,bjorng/otp,isvilen/otp,mikpe/otp