Meru800bia: adds initial data_corral_service support

[adamcalabrigo]

Adds initial data_corral_service implementation for Meru800bia.

Changes:

• Move DarwinLedColor definition to data_corral_service/ChassisManager.h ChassisLedColor enum so that LED color enums can be shared across platforms using the same namespace.
• Update data_corral_service/darwin/DarwinChassisManager.cpp/.h to use ChassisLedColor enum instead of DarwinLedColor enum.
• Add Meru800bia platform support to data_corral_service/DataCorralServiceImpl.cpp.
• Add data_corral_service/meru800bia/ directory with Meru800biaChassisManager.cpp, Meru800biaPlatformConfig.cpp, and Meru800biaFruModule.cpp files which contain implementation for FRU/LED management. Currently the implementation only initializes the chassis LEDs.
• Update cmake/PlatformDataCorralService.cmake to build Meru800bia files.

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