add intermediary_generations endpoint

src/main/java/net/ornithemc/meta/data/VersionDatabase.java

@@ -171,6 +171,7 @@ private static List<String> oslModules(int generation) {
 	private final Int2ObjectMap<Map<String, List<MavenVersion>>> oslModules;
 	private final Int2ObjectMap<Map<LoaderType, List<MavenBuildVersion>>> loader;
 
+	public IntermediaryGenerations intermediaryGenerations;
 	public List<MavenBuildGameVersion> raven;
 	public List<MavenBuildGameVersion> sparrow;
 	public List<MavenBuildGameVersion> nests;
@@ -208,6 +209,7 @@ public static VersionDatabase generate() throws Exception {
 			database.loader.get(generation).put(LoaderType.FABRIC, FABRIC_LOADER_METADATA_PARSER.getVersions(MavenBuildVersion::new, filterLoaderVersions(generation, LoaderType.FABRIC)));
 			database.loader.get(generation).put(LoaderType.QUILT, QUILT_LOADER_METADATA_PARSER.getVersions(MavenBuildVersion::new, filterLoaderVersions(generation, LoaderType.QUILT)));
 		}
+		database.intermediaryGenerations = new IntermediaryGenerations(config.latestIntermediaryGeneration, config.stableIntermediaryGeneration);
 		database.raven = RAVEN_METADATA_PARSER.getVersions(MavenBuildGameVersion::new);
 		database.sparrow = SPARROW_METADATA_PARSER.getVersions(MavenBuildGameVersion::new);
 		database.nests = NESTS_METADATA_PARSER.getVersions(MavenBuildGameVersion::new);

src/main/java/net/ornithemc/meta/web/EndpointsV3.java

@@ -53,6 +53,8 @@ public static void setup() {
 
 		jsonGet("", () -> OrnitheMeta.database);
 
+		jsonGet("/intermediary_generations", () -> OrnitheMeta.database.intermediaryGenerations);
+
 		jsonGetS("/game", generation -> () -> OrnitheMeta.database.getGame(generation));
 		jsonGetS("/game/intermediary", generation -> () -> compatibleGameVersions(OrnitheMeta.database.getIntermediary(generation), BaseVersion::getVersion, v -> new BaseVersion(v.getVersion(), v.isStable())));
 		jsonGetS("/game/feather", generation -> () -> compatibleGameVersions(OrnitheMeta.database.getFeather(generation), MavenBuildGameVersion::getGameVersion, v -> new BaseVersion(v.getGameVersion(), v.isStable())));

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

@@ -0,0 +1,30 @@
+/*
+ * 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 IntermediaryGenerations {
+
+	public int latestIntermediaryGeneration = -1;
+	public int stableIntermediaryGeneration = -1;
+
+	public IntermediaryGenerations(int latest, int stable) {
+		this.latestIntermediaryGeneration = latest;
+		this.stableIntermediaryGeneration = stable;
+	}
+}