Add binary for generating dummy tsql files

[LetsMelon]

Replaces ./llib/tests/generate_big.py with a new binary written in Rust named generate_tsql found under ./cli/bin/generate_tsql.rs.

Features that generate_tsql should implement:

• write to stdout (done in 369caf6)
• generate tables with foreign keys
• generate tables with multiple primary key fields
• integrate "dummy generating" logic into ./lib so that other parts can use them without using Command::new (done in 6d8c4a3)

[LetsMelon]

I rebased the the branch add_benches from main so that the new ci configuration is available in this PR.

[codecov-commenter]

Codecov Report

Merging #22 (f2ef7bf) into main (c4150ea) will increase coverage by 9.8%.
The diff coverage is 54.4%.

Additional details and impacted files

Files Changed	Coverage Δ
cli/bin/generate_tsql.rs	0.0% <0.0%> (ø)
cli/src/helper.rs	0.0% <0.0%> (ø)
cli/src/main.rs	0.0% <0.0%> (ø)
lib/src/lib.rs	0.0% <0.0%> (ø)
lib/src/types.rs	5.0% <15.9%> (+5.0%)	⬆️
lib/src/generate.rs	61.3% <61.3%> (ø)
lib/src/parser/types.rs	98.1% <99.4%> (+93.9%)	⬆️
lib/src/helper.rs	100.0% <100.0%> (ø)
lib/src/parser/mod.rs	42.1% <100.0%> (+42.1%)	⬆️