update to paper 1.18.2 and switch to gradle + fix up command sender to handle perms

src/main/resources/config.yml

@@ -0,0 +1,19 @@
+# BukkitTelnet v4.6.1 Configuration File
+
+# Address to listen on, leave blank for all
+address: ''
+
+# Port to bind to:
+port: 8765
+
+# Main connection password, must be defined
+password: 'walrus'
+
+# List of admins / IPs that don't have to use the password
+admins:
+  madgeek1450:
+    - 74.131.135.3
+  prozza:
+    - 176.56.237.227
+  markbyron:
+    - 71.47.67.103