chore(git): Add git attributes file for LF, CRLF handling

Instead of setting core.autocrlf for each and every user, who may or may not know git well enough to
set it beforehand, this git attributes file takes care of the CRLF behavior for  js source files
such that eslint does not crib and autocrlf ensures no windows line ending make it into git

Author: sudo-suhas

.gitattributes

@@ -0,0 +1,2 @@
+* text=auto
+*.js text eol=lf