Replace `import/no-restricted-paths` with `no-restricted-imports`

[fregante]

With a recent update, eslint became unreasonably slow, with lints running at 7 minutes locally. I think this started happening after a ts-eslint or import-plugin update. A good chunk of time seems to be taken by the import/no-restricted-paths rule currently, like 2 whole minutes.

I think the native no-restricted-imports could match the functionality, with the exception that it does not accept "per-directory" options. This can be achieved by using the native eslint overrides, but these overrides cancel out any other config for this rule, unless you manually re-apply it, like:

eslint-config-pixiebrix/index.js

Lines 266 to 278 in 81e6a3e

	"no-restricted-imports": [
	"error",
	{
	// Documentation: https://eslint.org/docs/rules/no-restricted-imports#options
	patterns: [
	// Extend the existing patterns
	...config.rules["no-restricted-imports"][1].patterns,
	{
	group: ["./*"],
	message:
	'Use root-based imports (`import "@/something"`) instead of relative imports.',
	},
	],