Update exit keys documentation with screenshots

Author: daGscheid

docs/02-guides/04-operation/exit-keys.md

@@ -5,8 +5,21 @@
 1. Enter the Staking page in Stereum
 2. Locate the individual key you want to Exit, on the right you will find multiple buttons. 
 3. Click "Exit & Withdrawal" button among them - if you need guidance, you can check the tooltips at the bottom. 
+
+![ExitAndWithdrawal1](../../../../../../static/screenshots/guides/exit-and-withdrawal-key/exit-and-withdrawal-key-individual-1.png)
+
 4. A modal will pop up 
 
+![ExitAndWithdrawal1](../../../../../../static/screenshots/guides/exit-and-withdrawal-key/exit-and-withdrawal-key-individual-2.png)
+
+
+![ExitAndWithdrawal1](../../../../../../static/screenshots/guides/exit-and-withdrawal-key/exit-and-withdrawal-key-individual-3.png)
+
+![ExitAndWithdrawal1](../../../../../../static/screenshots/guides/exit-and-withdrawal-key/exit-and-withdrawal-key-individual-4.png)
+
+![ExitAndWithdrawal1](../../../../../../static/screenshots/guides/exit-and-withdrawal-key/exit-and-withdrawal-key-individual-5.png)
+
+
 ## Exit all keys from a validator client
 
 1. Enter the Staking page in Stereum