build_runners: Attempt to make GeneratedFile steps

[llogick]

• Use original handle when trying to resolve field access, ie the microzig case, where a dep requests the app to import one of it's own app modules - app_dep.app_mod.some.

[Techatrix]

• Use original handle when trying to resolve field access, ie the microzig case, where a dep requests the app to import one of it's own app modules - app_dep.app_mod.some.

I am not familiar with how microzig works as a dependency. Could you give me a usage example of microzig that would showcase the issue that this PR addresses so I can figure out if this new root_handle is a good solution?

[llogick]

• Use original handle when trying to resolve field access, ie the microzig case, where a dep requests the app to import one of it's own app modules - app_dep.app_mod.some.

I am not familiar with how microzig works as a dependency. Could you give me a usage example of microzig that would showcase the issue that this PR addresses so I can figure out if this new root_handle is a good solution?

Yes, certainly -

An example microzig app https://github.com/ZigEmbeddedGroup/microzig-examples/tree/main/espressif-esp
common pattern https://github.com/ZigEmbeddedGroup/microzig-examples/blob/04f2c4a6ff5f4b20f2848175082f98409ecc0ede/espressif-esp/src/blinky.zig#L2-L3
these are actually app's modules https://github.com/ZigEmbeddedGroup/microzig/blob/f8a506ccc28447ff6f20bba13ad04e7ce8d26318/src/microzig.zig#L13-L26

So the app imports the microzig dep which uses the app's modules in the context of the app.

The app would also work if those lines were part of the app, but it's probably a convenience thing.

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (d433a58) 73.79% compared to head (49a6b12) 73.77%.

Files	Patch %	Lines
src/analysis.zig	66.66%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1606      +/-   ##
==========================================
- Coverage   73.79%   73.77%   -0.02%     
==========================================
  Files          33       33              
  Lines        8974     8981       +7     
==========================================
+ Hits         6622     6626       +4     
- Misses       2352     2355       +3     

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