Implement Structs

[edg-l]

Related to #71

mod Structs {
    struct Node {
        a: i32,
        b: i32,
    }

    fn main() -> i32 {
        let mut x: Node = create_node(2, 4);
        x.a = 5;
        return x.a + x.b;
    }

    fn create_node(a: i32, b: i32) -> Node {
        let x: Node = Node {
            a: a,
            b: b,
        };
        return x;
    }
}

[codecov-commenter]

Codecov Report

Attention: 86 lines in your changes are missing coverage. Please review.

Comparison is base (b6f3420) 58.27% compared to head (e94e2ee) 64.04%.

Files	Patch %	Lines
crates/concrete_codegen_mlir/src/scope_context.rs	75.40%	46 Missing ⚠️
crates/concrete_ast/src/types.rs	41.17%	20 Missing ⚠️
crates/concrete_codegen_mlir/src/codegen.rs	93.72%	17 Missing ⚠️
crates/concrete_check/src/lib.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            check      #85      +/-   ##
==========================================
+ Coverage   58.27%   64.04%   +5.77%     
==========================================
  Files          29       30       +1     
  Lines        1661     2050     +389     
==========================================
+ Hits          968     1313     +345     
- Misses        693      737      +44     

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