Makefile: Add `serve` target
Makefile: Add `serve` target

Launches ~/go/bin/tsr api

ArxdSilva/tsuru,cgvarela/tsuru,firebitsbr/tsuru,mderaldo/tsuru,ggarnier/tsuru,RichardKnop/tsuru,mderaldo/tsuru,jblancett/tsuru,4eek/tsuru,firebitsbr/tsuru,gciotta/tsuru,tuxmonteiro/tsuru,kgrvamsi/tsuru,jblancett/tsuru,hugoantunes/tsuru,gwmoura/tsuru,gwmoura/tsuru,hcxiong/tsuru,4eek/tsuru,hcxiong/tsuru,RichardKnop/tsuru,ArxdSilva/tsuru,Endika/tsuru,cezarsa/tsuru,ggarnier/tsuru,guilhermebr/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,Endika/tsuru,mderaldo/tsuru,tsuru/tsuru,tsuru/tsuru,guilhermebr/tsuru,tuxmonteiro/tsuru,guilhermebr/tsuru,4eek/tsuru,tsuru/tsuru,jblancett/tsuru,guilhermebr/tsuru,hcxiong/tsuru,firebitsbr/tsuru,kgrvamsi/tsuru,gciotta/tsuru,gciotta/tsuru,Endika/tsuru,tuxmonteiro/tsuru,kgrvamsi/tsuru,gwmoura/tsuru,ArxdSilva/tsuru,hugoantunes/tsuru,cgvarela/tsuru,ggarnier/tsuru,cgvarela/tsuru,RichardKnop/tsuru,cezarsa/tsuru,tsuru/tsuru,cezarsa/tsuru,cezarsa/tsuru