Github action to build and push chatwoot-ce(foss) edition images. This action will run on merges to master, develop and when tags are created. Corresponding docker tags are as follows.
GitHub branch/tag --> docker tag
----
master --> latest-ce
develop ---> develop-ce
v2.3.2 ---> v2.3.2-ce
v* ---> v*-ce
Fixes#4388