Expand dependency conflict resolution to allow different versions if major-version is compatible

[jsuereth]

• Fix forge tests
• Add new tests for dependencies
• Implement very simple "latest version in major-series wins" conflict resolution algorithm

[codecov]

Codecov Report

❌ Patch coverage is 71.00000% with 58 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.0%. Comparing base (4352e77) to head (41231b9).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/weaver_resolver/src/attribute.rs	64.2%	30 Missing ⚠️
crates/weaver_resolver/src/loader.rs	64.0%	18 Missing ⚠️
crates/weaver_resolver/src/dependency.rs	83.0%	10 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1573     +/-   ##
=======================================
- Coverage   82.2%   82.0%   -0.3%     
=======================================
  Files        129     129             
  Lines      10949   11078    +129     
=======================================
+ Hits        9010    9086     +76     
- Misses      1939    1992     +53     

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