Add renovate auto merge.

Author: vLuckyyy

renovate.json

@@ -1,5 +1,6 @@
 {
     "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+    "dependencyDashboard": true,
     "extends": [
         "config:base"
     ],
@@ -8,14 +9,44 @@
     "lockFileMaintenance": {
         "enabled": false
     },
+    "separateMajorMinor": true,
+    "pruneStaleBranches": true,
+    "commitMessagePrefix": "dependency:",
     "packageRules": [
         {
-            "groupName": "all dependencies",
-            "groupSlug": "all",
+            "groupName": "patch",
             "matchPackagePatterns": [
                 "*"
-            ]
+            ],
+            "excludePackagePatterns": ["org.spigotmc*"],
+            "updateTypes": ["patch"],
+            "automerge": true
+        },
+        {
+            "groupName": "minor",
+            "matchPackagePatterns": [
+                "*"
+            ],
+            "excludePackagePatterns": ["org.spigotmc*"],
+            "updateTypes": ["minor"],
+            "automerge": true
+        },
+        {
+            "groupName": "all-major",
+            "matchPackagePatterns": [
+                "*"
+            ],
+            "updateTypes": ["major"],
+            "excludePackagePatterns": ["org.spigotmc*"],
+            "automerge": false
+        },
+        {
+            "groupName": "spigotmc",
+            "matchPackagePatterns": [
+                "org.spigotmc*"
+            ],
+            "allowedVersions": "/^\\d+\\.\\d+(\\.\\d+)?-R\\d+\\.\\d+-SNAPSHOT$/",
+            "automerge": false
         }
-    ],
-    "separateMajorMinor": false
+    ]
 }