feat: commonizes several FDv2 related types in Internal (#141) #116

Job	Run time
release-please	23s
release-server-sdk-redis-store	0s
release-sdk-internal	0s
release-server-sdk-otel	0s
release-test-helpers	0s
release-sdk-common	0s
release-server-sdk	0s
	23s

Provide feedback