chore(cleanup): Finish removing the AppConfig singleton and move Options processing to the config package

[mcamou]

Description

After #623, #625 and #626, this is the final cleanup step. Our code is now singleton-free, and the circular dependencies that prevented us from moving Options processing to the config package are no more.

Notes for Reviewers

Die, singletons, die!!!!!

Signed commits

• [x] Yes, I signed my commits.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 18.39080% with 71 lines in your changes missing coverage. Please review.

Project coverage is 12.76%. Comparing base (5d12c5e) to head (a705d53). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
node/options.go	0.00%	24 Missing :warning:
pkg/config/app.go	0.00%	20 Missing :warning:
cmd/masa-node/main.go	0.00%	12 Missing :warning:
node/oracle_node_listener.go	0.00%	6 Missing :warning:
node/oracle_node.go	0.00%	4 Missing :warning:
pkg/workers/types/work_types.go	0.00%	2 Missing :warning:
node/protocol.go	0.00%	1 Missing :warning:
pkg/pubsub/manager.go	50.00%	1 Missing :warning:
pkg/workers/worker_manager.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #630 +/- ## ========================================== + Coverage 10.92% 12.76% +1.83% ========================================== Files 93 93 Lines 6708 6739 +31 ========================================== + Hits 733 860 +127 + Misses 5894 5804 -90 + Partials 81 75 -6 ```

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[mcamou]

I was having trouble with some tests after moving the Options processing to Config, so I'm going step by step. The first commit is JUST removing the singleton.