chore: add resolver test, configue vitest projects

[AlbertBrand]

Add a proper test for the createResolver logic, as I want to automatically prevent the regression.

Also, when running the test locally via VSCode the vitest extension did some incorrect assumption which tests to run, which is fixed by explicitly stating the testable projects.

[netlify[bot]]

❌ Deploy Preview for slidev failed.

Name	Link
🔨 Latest commit	6c9f2f8c5bb602faf8cfd1255088815c6267ba2f
🔍 Latest deploy log	https://app.netlify.com/projects/slidev/deploys/69392ec129d7d30008ee3abb

[AlbertBrand]

@antfu @kermanx This commit with upgrades https://github.com/slidevjs/slidev/commit/d11ddbdb361b2cffb534666c4fa3fd08ae4b2182 seems to have broken builds. When I do a pnpm i (with or without force) with that commit checked out and then run pnpm build I get:

> @52.10.1 build /Users/albertbrand/dev/slidev
> pnpm -r --filter=./packages/** --parallel run build

No matches found: "--filter=./packages/**"
 ELIFECYCLE  Command failed with exit code 1.

Maybe from the pnpm upgrade?

[pkg-pr-new[bot]]

Open in StackBlitz

@slidev/client

npm i https://pkg.pr.new/slidevjs/slidev/@slidev/client@2400

create-slidev

npm i https://pkg.pr.new/slidevjs/slidev/create-slidev@2400

create-slidev-theme

npm i https://pkg.pr.new/slidevjs/slidev/create-slidev-theme@2400

@slidev/parser

npm i https://pkg.pr.new/slidevjs/slidev/@slidev/parser@2400

@slidev/cli

npm i https://pkg.pr.new/slidevjs/slidev/@slidev/cli@2400

@slidev/types

npm i https://pkg.pr.new/slidevjs/slidev/@slidev/types@2400

commit: 6c9f2f8