Add view functions to Proxy pallet for runtime-specific type configuration #7297 #20970

Job	Run time
check-dependency-rules	10s
check-fail-ci	11s
check-workspace	16s
check-markdown	16s
check-readme	3m 13s
preflight / preflight	44s
preflight / ci-versions	1m 0s
check-rust-feature-propagation	2m 3s
check-umbrella	2m 12s
check-toml-format	1m 5s
fmt	1m 11s
test-rust-features	2m 0s
All quick checks passed	1s
	14m 22s

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