Deprecate soroban-rpc and publish stellar-rpc-client #171

Job	Run time
Integration tests (ubuntu-20.04, 1.22, .CLI.)	3m 4s
Unit tests (ubuntu-20.04, 1.22)	2m 33s
Integration tests (ubuntu-20.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	12m 3s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	2m 36s
Unit tests (ubuntu-22.04, 1.22)	2m 38s
Integration tests (ubuntu-22.04, 1.22, .CLI.)	2m 52s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	3m 38s
Integration tests (ubuntu-22.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	11m 28s
Build (macos-latest, x86_64-apple-darwin, amd64)	4m 17s
Build (macos-latest, aarch64-apple-darwin, arm64)	7m 8s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	9m 3s
	1h 1m 20s

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