feat(Tidal): format textual copyright symbols as © or ℗

[phw]

On Tidal it s very common to have copyright symbols in textual form, e.g. "(p)" or "(C)", instead of the dedicated symbols ℗ or ©. The symbols are also used, but it is not mandatory.

Add a utility function formatCopyrightSymbols to handle this. Also use this function in the existing Spotify implementation for copyright cleanup.

This PR partially but not completely addresses #23. I wanted to fix the most prominent issue where Tidal shows "(p) 2024 Some Band", but Spotify and iTunes give "℗ 2024 Some Band". Now there is a single consistent copyright entry.

Previously for https://tidal.com/album/64944658:

Now:

What this PR does not address:

• Handling copyright entries on Tidal without any symbol at all (textual or not). This needs more consideration, see my comment https://github.com/kellnerd/harmony/issues/23#issuecomment-2157983729
• Considering Tidal copyright entries on track level
• Considering any other provider (but only ones with copyright right now are iTunes and Spotify, and those seem to be fine)