fuzzer crash #531 fix

[g-r-a-n-t]

What was wrong?

closes #531

How was it fixed?

• updated lowering tests to use AST printing and insta
• added a test for tuple destructing
• fixed 531 by appending a $ to the front of lowered tuple struct names
• added a fuzzer crash regression test module and added a test for this PR

To-Do

• OPTIONAL: Update Spec if applicable
• Add entry to the release notes (may forgo for trivial changes)
• Clean up commit history

[codecov-commenter]

Codecov Report

Merging #546 (ba366a6) into master (8ee4ed7) will decrease coverage by 0.34%.
The diff coverage is 74.50%.

❗ Current head ba366a6 differs from pull request most recent head 84421e3. Consider uploading reports for the commit 84421e3 to get more accurate results

@@            Coverage Diff             @@
##           master     #546      +/-   ##
==========================================
- Coverage   87.91%   87.57%   -0.35%     
==========================================
  Files          87       87              
  Lines        5653     5907     +254     
==========================================
+ Hits         4970     5173     +203     
- Misses        683      734      +51     

Impacted Files	Coverage Δ
crates/parser/src/ast.rs	76.82% <74.40%> (+12.89%)	⬆️
crates/lowering/src/names.rs	78.57% <100.00%> (ø)

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[sbillig]

👍 😎 👍