Add basic Test harness

[edg-l]

• Also implements the unary op

Depends on #198

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 7.24638% with 192 lines in your changes missing coverage. Please review.

Project coverage is 58.21%. Comparing base (88e9cf8) to head (6c8cc44).

Files with missing lines	Patch %	Lines
src/driver/mod.rs	0.00%	79 Missing ⚠️
src/ir/lowering/expressions.rs	0.00%	59 Missing ⚠️
src/codegen/compiler.rs	0.00%	37 Missing ⚠️
src/check/mod.rs	0.00%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           stdlib     #200      +/-   ##
==========================================
- Coverage   60.43%   58.21%   -2.22%     
==========================================
  Files          25       25              
  Lines        4282     4471     +189     
==========================================
+ Hits         2588     2603      +15     
- Misses       1694     1868     +174     

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[github-actions]

Benchmarking factorial

Compiling factorial (factorial.con)
Finished release in 30.61357ms
Running 5000000 iterations
Using input value: 20
Concrete Result = 2432902008176640000 Time taken : 59.39 ms
Rust Result = 2432902008176640000 Time taken : 60.43 ms

Benchmarking fib

Compiling fib (fib.con)
Finished release in 26.655318ms
Running 5000 iterations
Using input value: 20
Concrete Result = 6765 Time taken : 136.92 ms
Rust Result = 6765 Time taken : 97.96 ms