Update getTxn rpc with events data #51

Job	Run time
Integration tests (ubuntu-20.04, 1.21, .CLI.)	27m 12s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	2m 47s
Unit tests (ubuntu-20.04, 1.21)	8m 7s
Integration tests (ubuntu-20.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	24m 9s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	3m 9s
Unit tests (ubuntu-22.04, 1.21)	8m 22s
Build (macos-latest, x86_64-apple-darwin, amd64)	6m 37s
Integration tests (ubuntu-22.04, 1.21, .CLI.)	27m 33s
Build (macos-latest, aarch64-apple-darwin, arm64)	7m 2s
Integration tests (ubuntu-22.04, 1.21, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	24m 1s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	8m 12s
	2h 27m 11s

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