✨ Add GET and PUT endpoints for media metadata

[aaronleopold]

This was asked on Discord to allow for better scripting capabilities when using the SDK

Note that PUT'ing the metadata requires library:manage permission

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 105 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
apps/server/src/routers/api/v1/media/individual.rs	0.00%	100 Missing ⚠️
apps/server/src/routers/api/v1/media/mod.rs	0.00%	5 Missing ⚠️

Files with missing lines	Coverage Δ
apps/server/src/routers/api/v1/media/mod.rs	0.00% <0.00%> (ø)
apps/server/src/routers/api/v1/media/individual.rs	0.00% <0.00%> (ø)

... and 4 files with indirect coverage changes