feat(typescript-estree): add support for class static blocks

[sosukesuzuki]

TypeScript 4.4 RC has been announced.

And it supports Stage-3 class static blocks ( https://devblogs.microsoft.com/typescript/announcing-typescript-4-4-rc/#static-blocks ).

This PR adds support for class static blocks.

[typescript-eslint]

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[codecov]

Codecov Report

Merging #3730 (7afb5b9) into master (055add0) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #3730   +/-   ##
=======================================
  Coverage   92.68%   92.68%           
=======================================
  Files         327      327           
  Lines       11351    11352    +1     
  Branches     3201     3201           
=======================================
+ Hits        10521    10522    +1     
  Misses        369      369           
  Partials      461      461           

Flag	Coverage Δ
unittest	92.68% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/typescript-estree/src/node-utils.ts	97.83% <ø> (ø)
...pt-estree/src/ts-estree/estree-to-ts-node-types.ts	100.00% <ø> (ø)
packages/visitor-keys/src/visitor-keys.ts	100.00% <ø> (ø)
...n/src/rules/indent-new-do-not-use/OffsetStorage.ts	100.00% <100.00%> (ø)
packages/typescript-estree/src/convert.ts	98.27% <100.00%> (+<0.01%)	⬆️

[MichaelDeBoey]

Suggested change

	[SyntaxKind.HashToken]: '#'; // new in PunctuationSyntaxKind in TS 4.4
	[SyntaxKind.HashToken]: '#';

Don't forget to remove all other TS 4.4 related comments in this file

[sosukesuzuki]

Thanks! I'll fix it later.

[sosukesuzuki]

@bradzacher TypeScript 4.4 has been released. I know you are busy, but it would be great if you could review it for us.

[bradzacher]

I was going to merge this as part of the v5 but I guess that this is non-breaking and it's actually the only AST change we explicitly need for 4.4 support there's no need to wait

A very quick eyeball it looks fine - I'll give it a full review tomorrow.

[bradzacher]

LGTM - thanks for this!