Renamed the semantics lib to analyzer.

[g-r-a-n-t]

This renames the fe-semantics library to fe-analyzer.

To-Do

• OPTIONAL: Update Spec if applicable

• Add entry to the release notes (may forgo for trivial changes)

• Clean up commit history

[cburgdorf]

Not that I think it is needed for this cahnge but these kind of changes could go into a 207.internal.md to get covered in the internal section of the release notes (which is for developers working on the Fe codebase...which isn't a large group yet so feel free to ignore 😅 )

[codecov-io]

Codecov Report

Merging #207 (d03ed4a) into master (e108a74) will increase coverage by 16.76%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           master     #207       +/-   ##
===========================================
+ Coverage   77.50%   94.27%   +16.76%     
===========================================
  Files          47       49        +2     
  Lines        3308     3355       +47     
===========================================
+ Hits         2564     3163      +599     
+ Misses        744      192      -552     

Impacted Files	Coverage Δ
analyzer/src/errors.rs	77.27% <ø> (ø)
analyzer/src/namespace/events.rs	100.00% <ø> (ø)
analyzer/src/namespace/operations.rs	90.32% <ø> (ø)
analyzer/src/namespace/scopes.rs	95.29% <ø> (ø)
analyzer/src/namespace/types.rs	85.58% <ø> (ø)
analyzer/src/traversal/_utils.rs	100.00% <ø> (ø)
analyzer/src/traversal/assignments.rs	96.87% <ø> (ø)
analyzer/src/traversal/contracts.rs	100.00% <ø> (ø)
analyzer/src/traversal/declarations.rs	95.65% <ø> (ø)
analyzer/src/traversal/expressions.rs	95.51% <ø> (ø)
... and 47 more

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