misc: merged file and group ir snapshots

[baszalmstra]

Merges the output of the file_ir and group_ir codegen snapshot tests.

[codecov]

Codecov Report

Merging #131 into master will not change coverage by %.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #131   +/-   ##
=======================================
  Coverage   78.86%   78.86%           
=======================================
  Files         141      141           
  Lines        8754     8754           
=======================================
  Hits         6904     6904           
  Misses       1850     1850           

Impacted Files	Coverage Δ
crates/mun_codegen/src/test.rs	97.40% <100.00%> (ø)

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