feat(sdk-coin-polyx): add v8 metadata and base V8 builders #3536

Job	Run time
Generate merge base API spec	8m 1s
Generate head API spec	8m 29s
Check specs identical	7s
API Spec Check	4s
Check breaking changes	-1s
Generate vacuum reports for API spec	-1s
Linter Override	-1s
	16m 38s

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