test: adds the ability to run txsim as knuu instance for testground sanity test #3741

Job	Run time
goreleaser / goreleaser-check	13s
lint / golangci-lint	55s
lint / yamllint	16s
markdown-linter / markdown-link-check	1m 43s
markdown-linter / markdown-lint	6s
test / test	9m 16s
test / test-coverage	2m 8s
test / test-short	1m 9s
test / test-fuzz	5m 0s
test / test-race	4m 38s
lint / hadolint / hadolint	6s
goreleaser / goreleaser	0s
	25m 30s

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