Add pointer offsetting (add) and intrinsic parsing

[edg-l]

Added the ability to offset a pointer, this allows us to do the following:

mod HelloWorld {
    pub extern fn malloc(size: u64) -> *mut u8;
    pub extern fn puts(data: *mut u8) -> i32;

    fn main() -> i32 {
        let origin: *mut u8 = malloc(12);
        let mut p: *mut u8 = origin;

        *p = 'H';
        p = p + 1;
        *p = 'e';
        p = p + 1;
        *p = 'l';
        p = p + 1;
        *p = 'l';
        p = p + 1;
         *p = 'o';
        p = p + 1;
         *p = ' ';
        p = p + 1;
         *p = 'W';
        p = p + 1;
         *p = 'o';
        p = p + 1;
         *p = 'r';
        p = p + 1;
         *p = 'l';
        p = p + 1;
         *p = 'd';
        p = p + 1;
        *p = '\0';
        puts(origin);

        return 0;
    }
}

Which prints "Hello World"

Also added the ability to add attributes to functions, and declare intrinsics:

mod MyMod {
    #[intrinsic = "simdsomething"]
    pub extern fn myintrinsic();
}

[github-actions]

Benchmarking factorial

Compiling factorial (factorial.con)
Finished release in 30.809279ms
Running 5000000 iterations
Using input value: 20
Concrete Result = 2432902008176640000 Time taken : 59.21 ms
Rust Result = 2432902008176640000 Time taken : 60.24 ms

Benchmarking fib

Compiling fib (fib.con)
Finished release in 26.396626ms
Running 5000 iterations
Using input value: 20
Concrete Result = 6765 Time taken : 135.98 ms
Rust Result = 6765 Time taken : 85.24 ms

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 71.42857% with 20 lines in your changes are missing coverage. Please review.

Project coverage is 61.78%. Comparing base (27904dc) to head (aff819d).

Files	Patch %	Lines
crates/concrete_codegen_mlir/src/codegen.rs	69.44%	11 Missing ⚠️
crates/concrete_ir/src/lib.rs	0.00%	6 Missing ⚠️
crates/concrete_ir/src/lowering.rs	84.21%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #125      +/-   ##
==========================================
+ Coverage   61.63%   61.78%   +0.15%     
==========================================
  Files          25       25              
  Lines        4329     4394      +65     
==========================================
+ Hits         2668     2715      +47     
- Misses       1661     1679      +18     

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