If IGNORE_OTHER_FILES is true, only copy readme.txt

[markjaquith]

Adds an ENV variable IGNORE_OTHER_FILES which defaults to false.

If someone overrides it with true, then instead of the big complicated copying logic, this will happen:

# Copy readme.txt to /trunk
cp "$GITHUB_WORKSPACE/$README_NAME" trunk/$README_NAME

# Use $TMP_DIR as the source of truth
TMP_DIR=$GITHUB_WORKSPACE

This means that the only thing that will be committed is readme.txt (trunk and stable tag), and the assets.

This maintains full back compat, but fixes #12

[markjaquith]

Still think this is worthwhile.

[jeffpaul]

@dinhtungdu @dhanendran given your work on other GH Actions, what's your take/review on the potential update here?

[dinhtungdu]

I think it's handy to copy only asset/readme. This will cause the readme/assets and the plugin source code out of sync because readme/assets are deployed independently now. But the flag is set to false by default, if developers set the flag, it's their responsibility to keep the readme/assets and plugin source in sync.

[iamdharmesh]

@markjaquith Thanks a lot for the PR and sorry for the delay in review.

PR looks good to me. just one minor change is needed in the readme, apart from that all good. Thanks again :)

[iamdharmesh]

Thanks!