chore: add fdv2 store & update sources to use fdv2 protocol definitions #256

Job	Run time
go-versions / go-versions	2s
Windows, Go 1.23	1m 3s
Windows, Go 1.22	2m 13s
Windows, Go 1.18	47s
Linux, Go 1.18 / Contract Tests	27s
Linux, Go 1.18 / Unit Tests and Coverage	21s
Linux, Go 1.18 / Benchmarks	4m 44s
Linux, Go 1.22 / Benchmarks	4m 39s
Linux, Go 1.22 / Contract Tests	20s
Linux, Go 1.22 / Unit Tests and Coverage	14s
Linux, Go 1.23 / Contract Tests	25s
Linux, Go 1.23 / Benchmarks	4m 48s
Linux, Go 1.23 / Unit Tests and Coverage	20s
	20m 23s

Provide feedback