Add Sable (#229)

* [WIP] Add support for Sable

* tweak sable controller

* echo_message: Add missing synchronization for Sable

* update sable

* whois: Simplify test

* WHO: Remove test for oper flag from testWhoChan

So it won't fail on Sable, which hides oper status

* WHO: Skip/xfail tests for Sable as needed

* Skip NakWhole when multi-prefix is not supported

* [WIP] Run Sable on CI

* working-directory is not setable on actions

* this isn't ergo

* this really isn't ergo

* minimize rust install and cache cargo deps

* Need to specify packages to install...

* Phony target

* Give up on 'cargo install', it seems to ignore the cache

* try again to cache the target dir

* This isn't Solanum

* Comment out BaseServicesController

* Parallelize Sable tests

* target is relative...

* sigh

* Fix prefix

* Re-add the other software

* chathistory: Test TOPIC is not sent unless event-playable is enabled

* sable: Dynamically generate certificates

This allows using custom server/services names

* sable: Enable services

* sable: Add support for account registration

Sable doesn't support REGISTER via NickServ

* sable: Lower log verbosity

* Fix lint

* Re-add Sable to CI

* Fix/skip tests on Sable

* Kill sable_services' subprocesses

* Bump Sable to include the labeled-response fix

* Bump Sable to the channel-rename downgrade fix

irctest/irc_utils/junkdrawer.py

@@ -13,7 +13,7 @@ def ircv3_timestamp_to_unixtime(timestamp: str) -> float:
 
 
 def random_name(base: str) -> str:
-    return base + "-" + secrets.token_hex(8)
+    return base + "-" + secrets.token_hex(5)
 
 
 def find_hostname_and_port() -> Tuple[str, int]: