Complete private authentication, server integrations and activity reporting

Add Fabric/Forge version builds and Paper integration, preserve permanent player identities across renames, harden session authorization, and surface privacy-conscious launcher/server activity in the panel.

integrations/paper/src/main/resources/config.yml

@@ -0,0 +1,3 @@
+# Create a server under Servers in the panel, then paste its token here.
+panel-url: "https://panel.example.com"
+token: ""

integrations/paper/src/main/resources/plugin.yml

@@ -0,0 +1,6 @@
+name: SCOPENET
+version: '${version}'
+main: net.scopenet.paper.ScopenetPlugin
+api-version: '1.20'
+description: SCOPENET private authentication, access control and activity reporting.
+load: STARTUP