Add --set-base-image-annotations flag to crane append

[imjasonh]

This flag instructs crane append to annotate the resulting image with
information about the base image (name and current digest). This flag is
false by default.

[codecov-commenter]

Codecov Report

Merging #1098 (230714e) into main (a65a0a6) will not change coverage.
The diff coverage is n/a.

❗ Current head 230714e differs from pull request most recent head 4e71d0d. Consider uploading reports for the commit 4e71d0d to get more accurate results

@@           Coverage Diff           @@
##             main    #1098   +/-   ##
=======================================
  Coverage   75.46%   75.46%           
=======================================
  Files         108      108           
  Lines        7679     7679           
=======================================
  Hits         5795     5795           
  Misses       1329     1329           
  Partials      555      555           

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