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

clap-utils/src/input_validators.rs

@@ -1,3 +1,4 @@
+use crate::keypair::ASK_KEYWORD;
 use solana_sdk::pubkey::Pubkey;
 use solana_sdk::signature::read_keypair_file;
 
@@ -16,6 +17,16 @@ pub fn is_keypair(string: String) -> Result<(), String> {
         .map_err(|err| format!("{:?}", err))
 }
 
+// Return an error if a keypair file cannot be parsed
+pub fn is_keypair_or_ask_keyword(string: String) -> Result<(), String> {
+    if string.as_str() == ASK_KEYWORD {
+        return Ok(());
+    }
+    read_keypair_file(&string)
+        .map(|_| ())
+        .map_err(|err| format!("{:?}", err))
+}
+
 // Return an error if string cannot be parsed as pubkey string or keypair file location
 pub fn is_pubkey_or_keypair(string: String) -> Result<(), String> {
     is_pubkey(string.clone()).or_else(|_| is_keypair(string))