Allow secure keypair input for solana-archiver and solana cli tools (#7106)

* Add seed phrase keypair recover to archiver

* Add seed phrase keypair to cli with ASK keyword

* cli main tweaks

net/remote/remote-node.sh

@@ -415,7 +415,7 @@ EOF
     )
 
     if [[ $airdropsEnabled != true ]]; then
-      # If this ever becomes a problem, we need to provide the `--identity`
+      # If this ever becomes a problem, we need to provide the `--identity-keypair`
       # argument to an existing system account with lamports in it
       echo "Error: archivers not supported without airdrops"
       exit 1