Add informative comment on @NullUnmarked injections

[nimakarimipour]

This PR is built upon #95

This PR resolves #97 by adding informative comment on @NullUnmarked injections.

Each comment has the format below:

// local for errors within the scope of the annotation, //non-local for errors outside annotation scope but within the same module, and //dependent module for errors in dependent modules.

To activate comment generation on NullUnmarked injection, flag acg must be passed to Annotator. We can also add a prefix to all generated comments via flag: cprefix.

-acg, --acitave-comment-generation
-cprefix, --comment-prefix (optional)

Or via passing a json file.

"COMMENT": {
     "ACTIVATION": true,
     "PREFIX": "prefix"
}

[nimakarimipour]

@msridhar @lazaroclapp I am converting this to draft for now, will get back to it if we wanted to have this feature.

[nimakarimipour]

@msridhar @lazaroclapp I am closing this one as I don't think we have any plans for now to bring this feature back. Also the branch is too old to revive. Please let me know if you would like to discuss this further, thank you.