pkg: add type lints.

[nodech]

Add jsdoc + typescript type lint support.

Depends on these:

• pkg: add type lints. bs32#2
• pkg: add lint-types and tsconfig to the project. bufio#6

[coveralls]

Pull Request Test Coverage Report for Build 5476901054

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A quick fix for this PR: rebase it; your next report should be accurate.

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.009%) to 82.018%

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Totals
Change from base Build 5474486458:	0.009%
Covered Lines:	996
Relevant Lines:	1230

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💛 - Coveralls