Adding docs on how to use Svelte Query with Jest

[DaniAkash]

Based on #4768 (comment)

Svelte Query only outputs ESM modules, it works great while we are on the vite, vitest or sveltekit ecosystem. However, when trying to build a library, using jest causes the tests to break since jest doesn't compile node_modules. Writing test cases will lead to the following error:

node_modules/.pnpm/@[email protected][email protected]/node_modules/@tanstack/svelte-query/build/lib/index.js:3
    export * from '@tanstack/query-core';
    ^^^^^^

    SyntaxError: Unexpected token 'export'

      13 |      CreateMutation,
      14 |      CreateQuery,
    > 15 |      CreateSubscribeToProps,
         |                          ^
      16 |      CreateSubscription,
      17 |      GetUser,
      18 |      MutationFetcher,

      at Runtime.createScriptFromCode (../../node_modules/.pnpm/[email protected]/node_modules/jest-runtime/build/index.js:1605:14)

Since I was trying it out on a PNPM monorepo, I had to add the following config to compile svelte-query

	"transformIgnorePatterns": [
		'<rootDir>/node_modules/.pnpm/@[email protected][email protected]/node_modules/@tanstack/svelte-query/'
	],

Would be nice to add this info to the documentation