Feature Request: Add option to only output modified Bazel rule targets, not modified Bazel file targets

[TimothySeah]

Right now bazel-diff outputs both modified rule targets (e.g. //dir1/dir2:file1_test) and modified file targets (e.g. //dir1/dir2:file1_test.py). Would it be possible to provide an option for bazel-diff to only output modified rule targets? Unlike file targets, rule targets can have Bazel tags that we would like to use.

[tinder-maxwellelliott]

I would recommend simply redirecting the output to query with https://bazel.build/reference/command-line-reference#flag--query_file to determine this. Bazel-diff makes no assumptions about the usages of its outputs, and putting that onus on the tool reduces its general usefulness