Support reading Composable Schemas from fs.FS

[drew-richardson]

Description

Enhance the composableschemadsl/compiler.Compile API by adding a new option SourceFS which instead of reading from the filesystem, reads from a virtual go filesystem. This makes no changes to the zed command line, but opens up the possibility to add something like zed compile --using-archive schemapackage.zip root.zed in the future.

Testing

I ran the unit tests and verified they passed, and I also added a trivial test for SourceFS.

References

#2807

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[tstirrat15]

This looks good to me.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.50%. Comparing base (9300588) to head (34d864e).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2808      +/-   ##
==========================================
- Coverage   78.52%   78.50%   -0.02%     
==========================================
  Files         459      459              
  Lines       44445    44448       +3     
==========================================
- Hits        34896    34889       -7     
- Misses       6723     6730       +7     
- Partials     2826     2829       +3     

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[drew-richardson]

I have read the CLA Document and I hereby sign the CLA