Add telemetry for jedi startup

[luabud]

Right now we only know when jedi completes symbol analysis but we don't know if it has successfully started up

[kimadeline]

Closing it as stale since #11995 was implemented (#15419).

Verification step

Can you check if we receive the JEDI_LANGUAGE_SERVER_STARTUP and JEDI_LANGUAGE_SERVER_READY events?