chore: rework plugin readmes, json changelogs and standalone repo setup

plugins/proxmox/CHANGELOG.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "https://raw.githubusercontent.com/Termix-SSH/Termix/main/packages/plugin-sdk/schema/changelog.schema.json",
+  "releases": [
+    {
+      "version": "1.0.0",
+      "changes": [
+        {
+          "type": "added",
+          "text": "Find and import VMs and LXC containers from a node"
+        },
+        {
+          "type": "added",
+          "text": "Keep imported hosts in sync on a schedule"
+        },
+        {
+          "type": "added",
+          "text": "Set up Windows guests for RDP and turn on Docker for guests by name"
+        },
+        {
+          "type": "added",
+          "text": "Node, guest, storage and cluster stats in their own tab"
+        }
+      ]
+    }
+  ]
+}