Require manual confirmation to purge database with purge-db (#6154)

* Require manual confirmation to purge database

* Fix tests

* Rename to `purge-db-force and skip in non-interactive mode

* Do not skip when stdin_inputs is true

* Change prompt to be info logging to ensure consistent output

* Update warning text

* Move delete log after deletion

book/src/help_vm_move.md

@@ -88,8 +88,6 @@ Options:
           A HTTP(S) address of a validator client using the keymanager-API. This
           validator client is the "source" and contains the validators that are
           to be moved.
-      --stdin-inputs
-          If present, read all user inputs from stdin instead of tty.
       --suggested-fee-recipient <ETH1_ADDRESS>
           All created validators will use this value for the suggested fee
           recipient. Omit this flag to use the default value from the VC.
@@ -142,6 +140,8 @@ Flags:
           contain sensitive information about your validator and so this flag
           should be used with caution. For Windows users, the log file
           permissions will be inherited from the parent folder.
+      --stdin-inputs
+          If present, read all user inputs from stdin instead of tty.
 ```
 
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