Add eslint on ts/vue

[huchenlei]

This PR adds eslint check on minimal ts/vue issues. JS lint is not enabled as that would cause too much trouble for this PR.

TODO:
Enable JS lint later.

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/@eslint/[email protected]	None	0	14.2 kB	eslintbot
npm/[email protected]	filesystem, unsafe Transitive: environment	+21	5.24 MB	ota-meshi
npm/[email protected]	environment Transitive: eval, filesystem, shell, unsafe	+81	9.79 MB	eslintbot
npm/[email protected]	None	0	173 kB	sindresorhus
npm/[email protected]	Transitive: environment, filesystem	+44	8.39 MB	jameshenry

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