feat(log): Add MemoryLog class

[ibgreen]

• Enables apps to log against an abstract Logger interface
• Can be a traditional Log (ConsoleLog) instance
• or a MemoryLog instance that log into a message array that can be presented in a UI.

This way e.g. loaders.gl loaders can log issues during parsing into an application provided log object.

[coveralls]

Pull Request Test Coverage Report for Build 11377118321

Details

• 37 of 99 (37.37%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.9%) to 64.351%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
modules/react-bench/src/components/bench-results.tsx	0	1	0.0%
modules/log/src/loggers/logger.ts	0	29	0.0%
modules/log/src/loggers/memory-log.ts	13	45	28.89%

Totals
Change from base Build 10627072284:	-0.9%
Covered Lines:	2162
Relevant Lines:	3421

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💛 - Coveralls