feat: add UE4SS DLL runtime extension

plugins/manifests/game-plugin.manifest.schema.json

@@ -124,6 +124,12 @@
           "type": "array",
           "items": { "$ref": "#/$defs/runtimeClientManagerProfile" },
           "uniqueItems": true
+        },
+        "dllExtensions": {
+          "type": "array",
+          "items": { "$ref": "#/$defs/runtimeDLLExtensionProfile" },
+          "uniqueItems": true,
+          "maxItems": 16
         }
       }
     },
@@ -428,6 +434,7 @@
         },
         "transportKeys": { "type": "array", "items": { "$ref": "#/$defs/logicalKey" }, "uniqueItems": true },
         "clientManagerRef": { "$ref": "#/$defs/logicalKey" },
+        "dllExtensionRefs": { "type": "array", "items": { "$ref": "#/$defs/logicalKey" }, "uniqueItems": true, "maxItems": 16 },
         "platforms": { "type": "array", "items": { "$ref": "#/$defs/runtimePlatform" }, "uniqueItems": true }
       }
     },
@@ -668,6 +675,36 @@
         }
       ]
     },
+    "runtimeDLLExtensionProfile": {
+      "type": "object",
+      "required": ["key", "displayName", "kind", "activation", "version", "releaseState", "targetKey", "modKey", "dllRef", "supportedTargets", "updateOnStart", "rconPort"],
+      "additionalProperties": false,
+      "properties": {
+        "key": { "$ref": "#/$defs/logicalKey" },
+        "displayName": { "type": "string", "minLength": 1, "maxLength": 80 },
+        "kind": { "const": "ue4ss-dll" },
+        "activation": { "const": "server-start" },
+        "version": { "type": "string", "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+(?:-[0-9A-Za-z.-]+)?$", "maxLength": 40 },
+        "releaseState": { "enum": ["unpublished", "ready"] },
+        "releaseUrl": { "type": "string", "pattern": "^https://[a-zA-Z0-9._~:/\\[\\]@!$&'()*+,;=%-]+\\.dll$", "maxLength": 240 },
+        "checksum": { "type": "string", "pattern": "^sha256:[a-fA-F0-9]{64}$" },
+        "sizeBytes": { "type": "integer", "minimum": 1, "maximum": 134217728 },
+        "targetKey": { "$ref": "#/$defs/logicalKey" },
+        "modKey": { "type": "string", "pattern": "^[a-z0-9][a-z0-9_-]{0,79}$" },
+        "dllRef": { "type": "string", "pattern": "^ue4ss/Mods/[a-z0-9][a-z0-9_-]{0,79}/dlls/main\\.dll$", "maxLength": 160 },
+        "scumExecutableChecksum": { "type": "string", "pattern": "^sha256:[a-fA-F0-9]{64}$" },
+        "ue4ssAbi": { "type": "string", "pattern": "^[A-Za-z0-9._-]{1,80}$" },
+        "supportedTargets": { "type": "array", "items": { "$ref": "#/$defs/runtimeTarget" }, "minItems": 1, "maxItems": 1, "uniqueItems": true },
+        "updateOnStart": { "const": true },
+        "rconPort": { "type": "integer", "minimum": 1024, "maximum": 65535 }
+      },
+      "allOf": [
+        {
+          "if": { "properties": { "releaseState": { "const": "ready" } }, "required": ["releaseState"] },
+          "then": { "required": ["releaseUrl", "checksum", "sizeBytes", "scumExecutableChecksum", "ue4ssAbi"] }
+        }
+      ]
+    },
     "aiPurpose": {
       "enum": [
         "config.read",