Remove oneof and ValueFailure from Datapoint and some proto naming improvements #307

Job	Run time
License Compliance Check	24s
Build (amd64)	1m 56s
Check links in markdown	29s
Build (arm64)	2m 33s
Build (riscv64)	1m 43s
Build Kuksa lib	1m 47s
Lint	2m 41s
Run unit tests	1m 12s
Check access rights / check_ghcr_push	1s
Create multiarch container	42s
Run integration test (arm64)	17s
Run integration test (amd64)	17s
Run integration test (riscv64)	20s
	14m 22s

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