Cardano Updates

Updated SCRIPT - 15_calidusPoolKey.sh

- The newly introduced script 15 has now two new functions:

   * You can now QUERY your pool-id or your calidus-id
   * You can now simply sign via ed25519 signing method

Examples:
15_calidusPoolKey.sh query all
... to get all current calidus key registrations

15_calidusPoolKey.sh query mypool
15_calidusPoolKey.sh query pool1w83ux7vrwafrsuz044knxl9xxtr38q5jj2l3p28fl3g26faqqwg
... to get results for your selected pool

15_calidusPoolKey.sh query mycalidus
15_calidusPoolKey.sh query calidus15xcc3mphdwu8amrx9m6v9v4552pugr2gcsj4m8arjmx3zwc8yf8ng
... to get results for your selected calidus key

15_calidusPoolKey.sh sign myKey "hello world"
... to sign the message-text "hello world" with your calidus key