feat: only create symbols for public functions

[Wodann]

No description provided.

[codecov]

Codecov Report

Merging #92 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #92      +/-   ##
==========================================
- Coverage   76.84%   76.82%   -0.02%     
==========================================
  Files         122      122              
  Lines        9833     9601     -232     
==========================================
- Hits         7556     7376     -180     
+ Misses       2277     2225      -52

Impacted Files	Coverage Δ
crates/mun_runtime_capi/src/tests.rs	99.47% <ø> (ø)	⬆️
crates/mun_runtime/src/test.rs	96.95% <ø> (-0.02%)	⬇️
crates/mun_codegen/src/code_gen/symbols.rs	96.53% <100%> (-0.67%)	⬇️
crates/mun_hir/src/adt.rs	89.28% <0%> (-5.55%)	⬇️
crates/mun_codegen/src/ir/function.rs	89.47% <0%> (-2.84%)	⬇️
crates/mun_runtime/src/assembly/temp_library.rs	70% <0%> (-2.73%)	⬇️
crates/mun_syntax/src/parsing/parser.rs	82.45% <0%> (-2.21%)	⬇️
crates/mun_runtime/src/macros.rs	72.22% <0%> (-1.47%)	⬇️
crates/mun_hir/src/resolve.rs	70.58% <0%> (-1.11%)	⬇️
crates/mun_hir/src/arena.rs	74.07% <0%> (-0.93%)	⬇️
... and 36 more

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[baszalmstra]

Looks good to me!

I really think that at some point we have to refactor symbol generation. Its quite messy and unclear.

[Wodann]

Write wrapper for value structs or stack allocated structs