add skywalkingencodingextension #2050

Job	Run time
CI - Contrib - GoReleaser / check-goreleaser (linux, 386)	8m 46s
CI - Contrib - GoReleaser / check-goreleaser (linux, amd64)	9m 14s
CI - Contrib - GoReleaser / check-goreleaser (linux, ppc64le)	9m 26s
CI - Contrib - GoReleaser / check-goreleaser (linux, arm64)	9m 36s
CI - Contrib - GoReleaser / check-goreleaser (windows, amd64)	9m 11s
CI - Contrib - GoReleaser / check-goreleaser (darwin, arm64)	9m 27s
CI - Contrib - GoReleaser / check-goreleaser (windows, 386)	10m 2s
CI - Contrib - GoReleaser / check-goreleaser (darwin, amd64)	9m 2s
CI - Contrib - GoReleaser / check-goreleaser (linux, arm)	10m 6s
CI - Contrib - GoReleaser / check-goreleaser (linux, s390x)	10m 18s
CI - Contrib - GoReleaser / docker-tests (linux, 386)	30s
CI - Contrib - GoReleaser / docker-tests (linux, amd64)	27s
CI - Contrib - GoReleaser / docker-tests (linux, arm64)	24s
CI - Contrib - GoReleaser / docker-tests (linux, ppc64le)	26s
CI - Contrib - GoReleaser / docker-tests (linux, arm)	29s
CI - Contrib - GoReleaser / docker-tests (linux, s390x)	27s
Package tests / Package Tests (deb)	36s
Package tests / Package Tests (rpm)	30s
MSI tests / MSI Tests (msi)	42s
Package tests / Create GitHub Issue	-1s
	1h 39m 38s

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