[opentelemetry-php-contrib] Create Symfony InstrumentationBundle

[tidal]

The SdkBundle by design only acts as a bridge between opentelemetry-php and Symfony.

The Symfony InstrumentationBundle should allow for auto-instrumentation of Symfony applications
by leveraging the event system and decorating common application componerts like MVC controllers.
Intsrumentation should work out of the box, but should be configurable in its behavior.

Doctrine instrumentation should be addressed in a separate dedictated package which could be leveraged by
the InstrumentationBundle.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[bobstrecansky]

This is actively being worked on : open-telemetry/opentelemetry-php-contrib#58

[bobstrecansky]

This issue was closed for being stale, I'm going to reopen it and pin it.