Print Periodic Stats

[patrick-ogrady]

Fixes #27.
Fixed #35.

Changes

We now print out summary messages every 10 seconds instead of streaming a long list of logs.

Before:

After:

Additionally, we also print out a warning if a check succeeded but no reconciliations were performed.

[coveralls]

Pull Request Test Coverage Report for Build 1550

• 32 of 63 (50.79%) changed or added relevant lines in 3 files are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.5%) to 60.132%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
internal/processor/reconciler_handler.go	0	6	0.0%
internal/storage/counter_storage.go	32	40	80.0%
internal/processor/syncer_handler.go	0	17	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/processor/syncer_handler.go	4	0%

Totals
Change from base Build 1505:	-0.5%
Covered Lines:	454
Relevant Lines:	755

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💛 - Coveralls