Initial Generics implementation (really basic)

[edg-l]

mod MyMod {

    pub fn hello_generics<T>(x: T) -> T {
        return x;
    }

    pub fn main() -> i32 {
        let value: i32 = hello_generics::<i32>(4);

        return value;
    }
}

depends on #164

Fixes #168

[github-actions]

Benchmarking factorial

Compiling factorial (factorial.con)
Finished release in 29.263377ms
Running 5000000 iterations
Using input value: 20
Concrete Result = 2432902008176640000 Time taken : 59.32 ms
Rust Result = 2432902008176640000 Time taken : 60.39 ms

Benchmarking fib

Compiling fib (fib.con)
Finished release in 26.550399ms
Running 5000 iterations
Using input value: 20
Concrete Result = 6765 Time taken : 136.69 ms
Rust Result = 6765 Time taken : 85.63 ms

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 58.85714% with 72 lines in your changes missing coverage. Please review.

Project coverage is 62.99%. Comparing base (de0d968) to head (e03908a).

Files with missing lines	Patch %	Lines
src/ir/lowering/prepass.rs	23.07%	20 Missing ⚠️
src/check/mod.rs	0.00%	17 Missing ⚠️
src/ast/types.rs	0.00%	15 Missing ⚠️
src/ir/lowering.rs	87.62%	12 Missing ⚠️
src/ast/common.rs	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #166      +/-   ##
==========================================
- Coverage   64.12%   62.99%   -1.13%     
==========================================
  Files          21       21              
  Lines        4989     4970      -19     
==========================================
- Hits         3199     3131      -68     
- Misses       1790     1839      +49     

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[juanbono]

See comments