deleting the crypto DB resulted in InitMatrixCrypto taking ages, added a
Initing/Inited log pair around the function so it's obvious this is the
culprit if any one else faces the same thing.
mautrix-go now include a cryptohelper package, which solves all my
issues and just works. the setting is now on by default, however
packages are not yet built with it.
since this is so broken and requires CGO deps, E2EE support is now only
included with "make E2EE=on ...". The option to enable will then appear
in settings.
