Since we now use the `ClientIp` Guard on a lot more places, it also
increases the size of binary, and the macro generated code because of
this extra Guard. By merging the `ClientIp` Guard with the several
`Header` guards we have it reduces the amount of code generated
(including LLVM IR), but also a small speedup in build time.
I also spotted some small `json!()` optimizations which also reduced the
amount of code generated.
This PR adds event/audit logging support for organizations.
By default this feature is disabled, since it does log a lot and adds
extra database transactions.
All events are touched except a few, since we do not support those
features (yet), like SSO for example.
This feature is tested with multiple clients and all database types.
Fixes #229
