fix: e2ee over federation

See merge request famedly/conduit!165

to device events were not being sent

improvement: more efficient auth chain cache

See merge request famedly/conduit!164

Better E2EE and faster incoming event handling

See merge request famedly/conduit!163

Only apply max. optimizations in CI builds.

See merge request famedly/conduit!162

fix: correct create event warnings

See merge request famedly/conduit!161

The average german man has a life expectancy of 78.7 years, or 689884.2 hours.
Assuming that Timo is 20 years old, he has rougly 514564.2 hours left on planet earth.
Also assuming that cross release builds took him 25 minutes before,
but 2-2.5x of that with the current release compilation config he wasted roughly an hour waiting for it to complete.
If he continued to work on Conduit for 20 more years (or 175320 hours),
and makes a release compilation about once per day, this means 7305 hours or 304 days wasted waiting for the rust compiler.
By cutting that back down to the original settings, he get's 182 days of his life back.
That's about 0.63% of his remaining life.
182 joyful days he can spend with family and loved ones.

Implement federation/v1/send_join

See merge request famedly/conduit!141

Consistent and escaped response in get_pdu

See merge request famedly/conduit!160

1. The fallback text of the get_pdu admin room command response message
   now contains the same text as the formatted_body content (namely, the
   json instead of Debug-formatting of a serde type).
2. The formatted_body content of the get_pdu response is now
   html-escaped.

Statediffs

See merge request famedly/conduit!145

CI: Use full optimizations for master and faster config else

See merge request famedly/conduit!155