refactor: actor system for tap-agent

[gusinacio]

No description provided.

[github-actions]

Pull Request Test Coverage Report for Build 8652297458

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 1074 of 1250 (85.92%) changed or added relevant lines in 9 files are covered.
• 66 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+4.2%) to 67.969%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
tap-agent/src/main.rs	0	16	0.0%
tap-agent/src/agent/sender_account.rs	265	285	92.98%
tap-agent/src/agent/sender_accounts_manager.rs	351	378	92.86%
tap-agent/src/agent.rs	0	52	0.0%
tap-agent/src/agent/sender_allocation.rs	358	419	85.44%

Files with Coverage Reduction	New Missed Lines	%
tap-agent/src/tap/context/receipt.rs	1	88.33%
tap-agent/src/agent.rs	1	0.0%
common/src/escrow_accounts.rs	1	79.08%
common/src/indexer_service/http/indexer_service.rs	63	0.0%

Totals
Change from base Build 8286736940:	4.2%
Covered Lines:	3236
Relevant Lines:	4761

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💛 - Coveralls

[aasseman]

LGTM!

Note that for 7effcb5, fixing a test still counts as "test", not "fix". Logic being that messing around with the tests doesn't change the code that gets shipped, so it shouldn't result in a version bump.
Doesn't matter too much here though since we're gonna squash.