feat: Adds :all option for metadata to logger backend

[isaacsanders]

Closes #522

[isaacsanders]

@cleptric the CI seems broken, outside of my change.

[isaacsanders]

I've tried fixing the CI, but it looks like it needs more help than I'm able to give right now.

[sl0thentr0py]

hey @isaacsanders finally looking at this, sorry for the delay.
If we include all metadata, should we maybe exclude the things listed here which are added by default?
Especially crash_reason which cannot be serialized as mentioned in #533 .

[isaacsanders]

When is the soonest we know we can’t serialize something? If you want to start a list of things we exclude, we can start it here, but we could also move this to the request serialization part of the code.

[whatyouhide]

This is obsolete now that we merged #605. Thanks @isaacsanders 💟