feat: add support for @vueuse/head versions >1.0.0

[ManneW]

The purpose of the changes in this PR is to add support for the consumer of the library to use newer versions of the @vueuse/head library, while still retaining compatibility with lower versions.

To have reliable test cases to ensure both versions are working, the structure of how the test fixtures are provided access to the vite-ssr build is slightly modified.

Feel free to ask any questions or add feedback about the implementation and I'll be happy to assist.

[thomasowow]

Fixes #195

[ManneW]

I think this also fixes #194 :slightly_smiling_face:

[SuzanaK]

Any idea when this can be merged?

[phlegx]

@frandiox the package @vueuse/head gets deprecated in the coming months.

See here: vueuse/head

In the coming months, the @vueuse/head package will be deprecated. If you're setting up this package on a new project, you should use the @unhead/vue package directly.

[frandiox]

Thanks a lot for this PR, and sorry for the late response! Not sure if we need backwards compatibility for 0.x or we can just require 1.x (or better, @unhead/vue) 🤔 Will try to come back to this in the weekend 🙏

[thomasowow]

Thanks a lot for this PR, and sorry for the late response! Not sure if we need backwards compatibility for 0.x or we can just require 1.x (or better, @unhead/vue) thinking Will try to come back to this in the weekend pray

Make sure to undo/update the change from #195 before this PR is merged.

[phlegx]

@frandiox thank you so much! If dependencies like @unhead/vue are upgraded, we should also upgrade @rollup/plugin-replace to v5.x. Like described in #201 warnings related to @rollup/plugin-replace can be solved.

[phlegx]

Hi! News from here? I can help to test the new planned version.