Per-command dependency injection

[danepowell]

I'm frequently discouraged from adding new commands if they would require adding a new dependency to the service container, since this requires adding the dependency to our already-massive CommandBase constructor as well as all the places its invoked. This is a pain to maintain.

And of course, there are performance considerations in building a service container with every possible dependency for every possible command every time the application is run.

It would be a lot better to only inject the dependencies necessary for a specific command when that command is run. This PR sets a precedent for that pattern and makes some progress by removing the Guzzle Client and Logstream Manager as base dependencies.

I'd really love to kill the CommandBase entirely, but I haven't figured out how to handle dependencies that are universal or nearly-universal, such as the Telemetry and Credentials helpers.

[codecov]

Codecov Report

Attention: 20 lines in your changes are missing coverage. Please review.

Comparison is base (6d963af) 91.30% compared to head (c1fce4c) 91.27%.

Files	Patch %	Lines
src/Command/CommandBase.php	91.81%	14 Missing ⚠️
src/Command/Pull/PullCommand.php	33.33%	4 Missing ⚠️
src/Command/Pull/PullDatabaseCommand.php	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1679      +/-   ##
============================================
- Coverage     91.30%   91.27%   -0.03%     
- Complexity     1786     1789       +3     
============================================
  Files           122      122              
  Lines          6373     6375       +2     
============================================
  Hits           5819     5819              
- Misses          554      556       +2     

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