chore: add fdv2 store & update sources to use fdv2 protocol definitions #275

Job	Run time
go-versions / go-versions	4s
Windows, Go 1.23	54s
Windows, Go 1.22	2m 2s
Windows, Go 1.18	51s
Linux, Go 1.18 / Contract Tests	24s
Linux, Go 1.18 / Unit Tests and Coverage	26s
Linux, Go 1.18 / Benchmarks	4m 45s
Linux, Go 1.22 / Benchmarks	4m 36s
Linux, Go 1.22 / Contract Tests	23s
Linux, Go 1.22 / Unit Tests and Coverage	13s
Linux, Go 1.23 / Benchmarks	4m 41s
Linux, Go 1.23 / Contract Tests	24s
Linux, Go 1.23 / Unit Tests and Coverage	26s
	20m 9s

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