feature: early support for arrays

[baszalmstra]

Adds support for arrays.

Missing feature:

• [ ] Hotreloading of arrays and types in arrays: https://github.com/baszalmstra/mun/pull/20
• [x] Using arrays from the runtime
• [ ] Documentation in the form of a book entry

Out of scope

• Adding and removing entries
• Querying the length

[codecov[bot]]

Codecov Report

Merging #341 (8e91402) into main (e14879c) will decrease coverage by 0.06%. The diff coverage is 87.49%.

@@            Coverage Diff             @@
##             main     #341      +/-   ##
==========================================
- Coverage   87.16%   87.09%   -0.07%     
==========================================
  Files         271      275       +4     
  Lines       29356    31046    +1690     
==========================================
+ Hits        25588    27040    +1452     
- Misses       3768     4006     +238     

Impacted Files	Coverage Δ
crates/mun_abi/src/lib.rs	96.36% <ø> (ø)
crates/mun_codegen/src/intrinsics/macros.rs	100.00% <ø> (ø)
crates/mun_codegen/src/ir.rs	38.02% <ø> (ø)
crates/mun_codegen/src/value/mod.rs	62.80% <ø> (-2.48%)	:arrow_down:
crates/mun_hir/src/item_tree.rs	85.09% <ø> (ø)
crates/mun_hir/src/ty/op.rs	95.65% <ø> (ø)
crates/mun_memory/src/gc.rs	85.71% <ø> (ø)
crates/mun_memory/src/lib.rs	50.00% <ø> (ø)
crates/mun_memory/src/type/ffi/pointer.rs	80.83% <ø> (-8.34%)	:arrow_down:
crates/mun_runtime_capi/src/gc.rs	100.00% <ø> (ø)
... and 69 more

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[baszalmstra]

I would really like to support creating arrays from a Rust iterator. Something like:

let mun_array: ArrayRef = runtime.construct_array::<i32>(vec![1,2,3,4,].into_iter())

However, this requires type references, because the type information of the array cannot be created. The type information has to be created and shared with the mun libraries. This requires type references.

[baszalmstra]

Depends on #268

[baszalmstra]

I would really like to support creating arrays from a Rust iterator. Something like:

let mun_array: ArrayRef = runtime.construct_array::<i32>(vec![1,2,3,4,].into_iter())

However, this requires type references, because the type information of the array cannot be created. The type information has to be created and shared with the mun libraries. This requires type references.

It took almost a year, but this is now possible in this branch!

[Wodann]

For the rocket and spaceship logic, can all of tr updates not just happen in Mun? In theory, we only need to query their positions from Rust to draw them