fix: extends types to vue instead of @vue/runtime-core

[wenfangdu]

Description

Since many projects don't have @vue/runtime-core installed (pnpm projects in particular), the types generated by unplugin-vue-components won't work. Vue projects do have vue installed and augmenting vue itself is enough to get the types to work with Volar.

Linked Issues

Fixes vuejs/language-tools#3107
Fixes #355
Fixes #635

[lishaobos]

regression: #640

[kevinvalk]

This indeed prevents types from properly showing up in my setup (quite standard, Vue3, up to date Vue language extensions, TS5 but just like #640 I am also using unplugin-auto-import). https://github.com/vuejs/router even has a TODO in their code asking why it is not working with 'vue' (I do not have the answer).
https://github.com/vuejs/router/blob/c396d14b57be0da1e3504856e89d282f0666242f/packages/router/src/globalExtensions.ts#L11-L12

Solution so far as to lock to version "0.25.0".

[elvisWEB]

This indeed prevents types from properly showing up in my setup (quite standard, Vue3, up to date Vue language extensions, TS5 but just like #640 I am also using unplugin-auto-import). https://github.com/vuejs/router even has a TODO in their code asking why it is not working with 'vue' (I do not have the answer). https://github.com/vuejs/router/blob/c396d14b57be0da1e3504856e89d282f0666242f/packages/router/src/globalExtensions.ts#L11-L12

Solution so far as to lock to version "0.25.0".

I also encountered the same problem, which took me a lot of time to troubleshoot. I suggest adding an option to control whether to use 'vue' or '@vue/runtime-core'