Add TOML formatting checks

[xtqqczze]

No description provided.

[github-actions]

Performance Benchmark Report

Benchmark name	Baseline (μs)	Test/PR (μs)	Delta (μs)	Delta %
clone_shell_object	13.66 μs	13.72 μs	0.06 μs	⚪ Unchanged
eval_arithmetic	0.12 μs	0.12 μs	0.00 μs	⚪ Unchanged
expand_one_string	1.22 μs	1.22 μs	0.00 μs	⚪ Unchanged
for_loop	24.09 μs	25.08 μs	0.99 μs	🟠 +4.10%
full_peg_complex	43.48 μs	43.83 μs	0.35 μs	⚪ Unchanged
full_peg_for_loop	4.78 μs	4.82 μs	0.04 μs	⚪ Unchanged
full_peg_nested_expansions	12.79 μs	12.85 μs	0.06 μs	⚪ Unchanged
full_peg_pipeline	3.25 μs	3.26 μs	0.01 μs	⚪ Unchanged
full_peg_simple	1.36 μs	1.38 μs	0.02 μs	⚪ Unchanged
function_call	2.73 μs	3.02 μs	0.29 μs	⚪ Unchanged
instantiate_shell	43.29 μs	42.62 μs	-0.67 μs	🟢 -1.55%
instantiate_shell_with_init_scripts	21237.39 μs	21356.44 μs	119.04 μs	⚪ Unchanged
parse_peg_bash_completion	1621.17 μs	1623.32 μs	2.15 μs	⚪ Unchanged
parse_peg_complex	14.66 μs	15.03 μs	0.37 μs	🟠 +2.54%
parse_peg_for_loop	1.45 μs	1.45 μs	0.00 μs	⚪ Unchanged
parse_peg_pipeline	1.56 μs	1.54 μs	-0.02 μs	⚪ Unchanged
parse_peg_simple	0.82 μs	0.84 μs	0.02 μs	🟠 +2.56%
run_echo_builtin_command	13.10 μs	12.98 μs	-0.12 μs	⚪ Unchanged
tokenize_sample_script	2.69 μs	2.74 μs	0.05 μs	🟠 +1.90%

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
Overall Coverage	🟢 75.2%	🟢 75.2%	⚪ 0%

Minimum allowed coverage is 70%, this run produced 75.2%

Test Summary: bash-completion test suite

Outcome	Count	Percentage
✅ Pass	1582	75.01
❗️ Error	18	0.85
❌ Fail	155	7.35
⏩ Skip	339	16.07
❎ Expected Fail	13	0.62
✔️ Unexpected Pass	2	0.09
📊 Total	2109	100.00