Add --install-only command for cargo-build-sbf

[LucasSte]

Problem

Downloads directly from the browser URL may fail in slow connections because Github now restricts them to a five minute window. One of the alternatives discussed in https://github.com/orgs/community/discussions/169381#discussioncomment-14105326 is using the Github REST API for the download.

This PR should fix anza-xyz/platform-tools#108 and anza-xyz/platform-tools#107.

This is a second approach to #8370, whereby we only use the Github REST API with the --install-only command.

Summary of Changes

1. Add option --install-only, which downloads the tools from Github's REST API. It works with --force-tools-install and --tools-version.
2. Add a hint to use --install-only when the download from the browser URL fails.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.1%. Comparing base (6d5ab8f) to head (9b0eb1f).
⚠️ Report is 22 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #8461     +/-   ##
=========================================
- Coverage    83.2%    83.1%   -0.1%     
=========================================
  Files         840      840             
  Lines      367886   367886             
=========================================
- Hits       306083   306075      -8     
- Misses      61803    61811      +8     

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[joncinque]

Looks great to me! This is going to be extremely useful. Just the typo from me