Add versions used to compile/build against to jar manifest (#428)

* Add versions used to compile/build against to jar manifest

* checkstyle

* Move to post remap

* Fix build

* Add mc version and mixin group

* Typo

* Make test run across versions better.

(cherry picked from commit 2259a4efc8)
Signed-off-by: shedaniel <daniel@shedaniel.me>

src/main/java/net/fabricmc/loom/configuration/InstallerData.java

@@ -0,0 +1,65 @@
+/*
+ * This file is part of fabric-loom, licensed under the MIT License (MIT).
+ *
+ * Copyright (c) 2021 FabricMC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package net.fabricmc.loom.configuration;
+
+import java.util.Objects;
+
+import com.google.gson.JsonObject;
+
+public final class InstallerData {
+	private final String version;
+	private final JsonObject installerJson;
+
+	InstallerData(String version, JsonObject installerJson) {
+		this.version = version;
+		this.installerJson = installerJson;
+	}
+
+	public String version() {
+		return version;
+	}
+
+	public JsonObject installerJson() {
+		return installerJson;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (obj == this) return true;
+		if (obj == null || obj.getClass() != this.getClass()) return false;
+		InstallerData that = (InstallerData) obj;
+		return Objects.equals(this.version, that.version) && Objects.equals(this.installerJson, that.installerJson);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(version, installerJson);
+	}
+
+	@Override
+	public String toString() {
+		return "InstallerData[" + "version=" + version + ", " + "installerJson=" + installerJson + ']';
+	}
+}