style: update to ESLint v9 and rework lint config (#438) #613

Job	Run time
build	47s
Svelte 3, Node 16, test:vitest:happy-dom	41s
Svelte 3, Node 16, test:jest	31s
Svelte 3, Node 16, test:vitest:jsdom	36s
Svelte 3, Node 18, test:vitest:happy-dom	47s
Svelte 4, Node 16, test:vitest:happy-dom	40s
Svelte 3, Node 20, test:vitest:happy-dom	48s
Svelte 4, Node 18, test:jest	48s
Svelte 4, Node 16, test:vitest:jsdom	42s
Svelte 3, Node 20, test:vitest:jsdom	47s
Svelte 4, Node 16, test:jest	36s
Svelte 3, Node 18, test:vitest:jsdom	48s
Svelte 4, Node 18, test:vitest:happy-dom	42s
Svelte 4, Node 20, test:vitest:jsdom	42s
Svelte 5, Node 20, test:vitest:happy-dom	54s
Svelte 4, Node 22, test:vitest:jsdom	39s
Svelte 3, Node 18, test:jest	51s
Svelte 4, Node 20, test:vitest:happy-dom	44s
Svelte 5, Node 20, test:vitest:jsdom	54s
Svelte 5, Node 20, test:jest	52s
Svelte 4, Node 18, test:vitest:jsdom	46s
Svelte 4, Node 22, test:jest	44s
Svelte 5, Node 22, test:vitest:happy-dom	47s
Svelte 4, Node 20, test:jest	37s
Svelte 4, Node 22, types:legacy	42s
Svelte 3, Node 20, test:jest	45s
Svelte 5, Node 22, lint	46s
Svelte 5, Node 22, test:vitest:jsdom	54s
Svelte 5, Node 22, types	41s
Svelte 4, Node 22, test:vitest:happy-dom	38s
Svelte 5, Node 22, test:jest	1m 3s
Svelte 3, Node 20, types:legacy	33s
release	16s
	24m 1s

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