add required JVM args for Loader to profile json

src/main/java/net/ornithemc/meta/web/ProfileHandlerV3.java

@@ -167,10 +167,16 @@ private static JsonNode buildProfileJson(int generation, LoaderInfoV3 info, Stri
 		}
 
 		ObjectNode arguments = OrnitheMeta.MAPPER.createObjectNode();
-
+		ArrayNode jvmArgs = arguments.putArray("jvm");
 		// I believe this is required to stop the launcher from complaining
 		arguments.putArray("game");
 
+		if (generation >= 2) {
+			// value not needed for FLoader, but QLoader requires the value to be true
+			jvmArgs.add(info.getLoaderType().getJvmArguments().fixPackageAccess(true));
+		}
+		jvmArgs.add(info.getLoaderType().getJvmArguments().gameVersion(info.getGame(side)));
+
 		profile.set("arguments", arguments);
 
 		profile.put("libraries", libraries);

src/main/java/net/ornithemc/meta/web/models/JvmArguments.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2019 FabricMC
+ *
+ * Modifications copyright (c) 2022 OrnitheMC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.ornithemc.meta.web.models;
+
+public class JvmArguments {
+
+	String fixPackageAccess;
+	String gameVersion;
+
+	public JvmArguments(String fixPackageAccess, String gameVersion) {
+		this.fixPackageAccess = fixPackageAccess;
+		this.gameVersion = gameVersion;
+	}
+
+	public String fixPackageAccess(boolean value) {
+		return this.fixPackageAccess + "=" + value;
+	}
+
+	public String gameVersion(String value) {
+		return this.gameVersion + "=" + value;
+	}
+}

src/main/java/net/ornithemc/meta/web/models/LoaderType.java

@@ -22,16 +22,22 @@
 
 public enum LoaderType {
 
-	FABRIC("fabric", VersionDatabase.FABRIC_MAVEN_URL),
-	QUILT("quilt", VersionDatabase.QUILT_MAVEN_URL),
+	FABRIC("fabric", VersionDatabase.FABRIC_MAVEN_URL, new JvmArguments("-Dfabric.fixPackageAccess", "-Dfabric.gameVersion")),
+	QUILT("quilt", VersionDatabase.QUILT_MAVEN_URL, new JvmArguments("-Dloader.fixPackageAccess", "-Dloader.gameVersion")),
 	ORNITHE("ornithe", VersionDatabase.ORNITHE_MAVEN_URL);
 
 	private final String name;
 	private final String maven;
+	private final JvmArguments jvmArguments;
 
 	private LoaderType(String name, String maven) {
+		this(name, maven, new JvmArguments(null, null));
+	}
+
+	private LoaderType(String name, String maven, JvmArguments jvmArguments) {
 		this.name = name;
 		this.maven = maven;
+		this.jvmArguments = jvmArguments;
 	}
 
 	public String getName() {
@@ -41,4 +47,8 @@ public String getName() {
 	public String getMavenUrl() {
 		return maven;
 	}
+
+	public JvmArguments getJvmArguments() {
+		return jvmArguments;
+	}
 }