This PR
- adds -stdinwalletpassphrase for use with walletpasshprase(change)
- adds no-echo for passwords (-stdinrpcpass and above)
This is a backport of Core PR13716 [2/3]
Commit: https://github.com/bitcoin/bitcoin/pull/13716/commits/7f11fba2e3c7b1e00ffb98504cdcfc2ded9c09cf
Depends D8106