docs: README.md - remove broken badge and add link to repository map

[alexkarezin]

Removing broken badge link from the header.

Adding a link to the high-level diagrams including module, library dependency and others (https://sourcespy.com/github/salesforcedockerfileimageupdate/). Built directly from source and updated on schedule. Intended to simplify developer's introduction to the project. In the spirit of transparency - I am the author of the diagrams. Hope contributors find it useful.

[salesforce-cla[bot]]

Thanks for the contribution! Before we can merge this, we need @alexkarezin to sign the Salesforce Inc. Contributor License Agreement.

[alexkarezin]

@afalko Andrey, maybe you can help? I believe I signed the CLA, is approval the only thing required? Any chance you can take a look at that and the PR? Thanks a lot!

[codecov[bot]]

Codecov Report

Merging #1124 (b147c35) into main (918ac20) will not change coverage. Report is 2 commits behind head on main. The diff coverage is n/a.

:exclamation: Current head b147c35 differs from pull request most recent head 8a0d0d0. Consider uploading reports for the commit 8a0d0d0 to get more accurate results

@@            Coverage Diff            @@
##               main    #1124   +/-   ##
=========================================
  Coverage     84.62%   84.62%           
  Complexity      378      378           
=========================================
  Files            27       27           
  Lines          1255     1255           
  Branches        166      166           
=========================================
  Hits           1062     1062           
  Misses          157      157           
  Partials         36       36           

[afalko]

@alexkarezin I'm going to close and reopen the PR to see if that resets the state of the cla bot for this.