mantine pnpm vite vitest template

[koba-ninkigumi]

I installed the official Mantine template with pnpm and found that jest causes errors.
So I decided to use Vitest.

I am publishing this because there may be others who want to use the combination of Mantine, Vite and Vitest in pNpM.

https://github.com/awsome-dev/mantine-pnpm-vite-vitest-template