Deprecate soroban-rpc and publish stellar-rpc-client #172

Job	Run time
Integration tests (ubuntu-20.04, 1.22, .CLI.)	2m 20s
Build (ubuntu-latest, x86_64-unknown-linux-gnu, amd64)	2m 39s
Unit tests (ubuntu-20.04, 1.22)	1m 55s
Integration tests (ubuntu-20.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	11m 49s
Integration tests (ubuntu-22.04, 1.22, .CLI.)	1m 57s
Unit tests (ubuntu-22.04, 1.22)	2m 1s
Build (ubuntu-latest, aarch64-unknown-linux-gnu, arm64)	2m 56s
Integration tests (ubuntu-22.04, 1.22, ^Test(([^C])\|(C[^L])\|(CL[^I])).*$)	11m 13s
Build (macos-latest, x86_64-apple-darwin, amd64)	7m 18s
Build (macos-latest, aarch64-apple-darwin, arm64)	4m 4s
Build (windows-latest, x86_64-pc-windows-gnu, amd64)	7m 43s
	55m 55s

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