feat: add cot new command for starting new projects

[m4tx]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 73.17073% with 22 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cot-cli/src/main.rs	0.00%	16 Missing ⚠️
cot-cli/tests/new_project.rs	87.50%	4 Missing ⚠️
cot-cli/src/new_project.rs	92.85%	2 Missing ⚠️

Flag	Coverage Δ
rust	85.89% <73.17%> (-0.12%)	⬇️

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Files with missing lines	Coverage Δ
cot-cli/src/utils.rs	28.57% <100.00%> (+28.57%)	⬆️
cot-cli/src/new_project.rs	92.85% <92.85%> (ø)
cot-cli/tests/new_project.rs	87.50% <87.50%> (ø)
cot-cli/src/main.rs	0.00% <0.00%> (ø)

[seqre]

LGTM, few minor comments