Merge bitcoin#24339: rpc: Improve RPC help by explicitly mentioning output types

BACKPORT NOTE:
has been done previously; applied missing changes in src/rpc/blockchain.cpp

c821ab8 Use `GetAllOutputTypes` in `getblock` RPC function (Kiminuo)
d970a85 Move `GetAllOutputTypes` function from `rpc/rawtransaction.cpp` to `rpc/util.{h|cpp}` (Kiminuo)

Pull request description:

  This PR attempts to replicate https://github.com/bitcoin/bitcoin/blob/0ccf9b2e5594581deef2f60174c3651a57f93b64/src/rpc/rawtransaction.cpp#L547 to one other place (at the moment) so that users have better idea what RPC methods can actually return.

  I created this PR as a follow-up to the idea mentioned here bitcoin#23320 (comment) (resolved).

ACKs for top commit:
  kristapsk:
    re-ACK c821ab8

Tree-SHA512: 5ff66a41ad7c43ec769f4a99933d2d070feea7c617286d94b6f9bfa1a2547a42211915778210a89074ad4b14d99f34852cc6871efed5e6f1e2ffedd40d669386

Author: MarcoFalke

src/rpc/blockchain.cpp

@@ -948,7 +948,7 @@ const RPCResult getblock_vin{
                     {RPCResult::Type::STR, "desc", "Inferred descriptor for the output"},
                     {RPCResult::Type::STR_HEX, "hex", "The raw public key script bytes, hex-encoded"},
                     {RPCResult::Type::STR, "address", /*optional=*/true, "The Dash address (only if a well-defined address exists)"},
-                    {RPCResult::Type::STR, "type", "The type, eg 'pubkeyhash'"},
+                    {RPCResult::Type::STR, "type", "The output type (e.g. " + GetAllOutputTypes() + ")"},
                 }},
             }},
         }},