wip: Add more form attributes

[ElijahAhianyo]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 84.68750% with 49 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cot/src/form/fields.rs	88.61%	6 Missing and 22 partials ⚠️
cot/src/form/fields/attrs.rs	55.55%	20 Missing ⚠️
cot/src/form/fields/files.rs	93.75%	0 Missing and 1 partial ⚠️

Flag	Coverage Δ
rust	89.29% <84.68%> (-0.04%)	⬇️

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Files with missing lines	Coverage Δ
cot/src/html.rs	97.60% <100.00%> (+0.15%)	⬆️
cot/src/form/fields/files.rs	93.08% <93.75%> (-0.07%)	⬇️
cot/src/form/fields/attrs.rs	60.00% <55.55%> (+60.00%)	⬆️
cot/src/form/fields.rs	88.48% <88.61%> (+0.51%)	⬆️

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