Fix petits logging regressions from feature/click-cli merge

[jtcohen6]

resolves #6933

Description

• Add "initialization" events that previously lived in old main.py
• Update how flags are used in EventManager initialization, to fix --log-cache-events. I think we have access to less than we used to(?)
• Try adding exception handling / event firing back to track_run, matching old main.py. Not sure if we need/want to do this

Checklist

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• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

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[jtcohen6]

@peterallenwebb I don't think we'll be able to solve #6847 in the same way you did #6886, because we now need a click Context to access flags.QUIET (even if it's passed in on the CLI), and we don't have access to that as early as we used to.

That approach was always a bit opportunistic, so I don't feel like this is a huge deal. Open to ideas for sure.

[jtcohen6]

Trying to emulate this logic:

dbt-core/core/dbt/main.py

Lines 142 to 145 in 4d0ee2f

	except KeyboardInterrupt:
	# if the logger isn't configured yet, it will use the default logger
	fire_event(MainKeyboardInterrupt())
	exit_code = ExitCodes.UnhandledError.value

Not sure of exactly how this works now. The only thing we're losing out on is a structured event (MainKeyboardInterrupt) recording that a run was cancelled. Still, that might be cause enough to want to keep this logic around.

[jtcohen6]

Emulating this logic:

dbt-core/core/dbt/main.py

Lines 151 to 155 in 4d0ee2f

	except BaseException as e:
	fire_event(MainEncounteredError(exc=str(e)))
	if not isinstance(e, dbtException):
	fire_event(MainStackTrace(stack_trace=traceback.format_exc()))
	exit_code = ExitCodes.UnhandledError.value

[jtcohen6]

Try adding exception handling / event firing back to track_run, matching old main.py. Not sure if we need/want to do this

I'm going to kick this piece out of the present PR, and prioritize the simpler & less controversial changes for now

[jtcohen6]

The values needs to be stringified first, because it's defined as Dict[str, str]:

dbt-core/core/dbt/events/types.proto

Lines 82 to 85 in f1087e5

	// A002
	message MainReportArgs {
	map<string, string> args = 1;
	}

(The good news is, this was caught by some of our functional tests!)

As discussed during BLG on Friday, we should investigate if we can support the Struct proto type (Dict[str, Any]): #6803 (comment)

[peterallenwebb]

Looks good.