feat: Rename `socials` to `connections`

[oSumAtrIX]

Issue

Currently, we refer to the links endpoints as socials, but they turned out to be more than that, involving various links.

Solution

Rename socials to connections or links as a generalization.

Additional context

This may be considered a breaking change so incrementing the API version may be necessary.

[Ushie]

Has this been resolved in the feat/fly branch? or is it still up for grabs

[alexandreteles]

Still up.

[Ushie]

@ReVanced/infrastructure Maybe make a v3 milestone label/project for this repo and assign this to it?