Update so many dependencies, merge Forge/Fabric for final jar (#1651)

* Update so many dependencies, merge Forge/Fabric for final

* Clean up contrib docs for Gradle change

* Fix setting compat flags while using toolchain

* Fix deprecation in doc printer

* Restore proper forge JAR name

* Add dist classifier for mod jar

* Properly relocate new bStats

* Fix jar used from fabric

* Fix fabric bom

* Dup the shaded classes for consistency

* Sync Forge/Fabric log4j versions, de-dup

* Downgrade both log4j. This will work

* Update some plugins as well

* Drop the fabric force stuff

* Use duplicate strategy to directly merge jar

buildSrc/src/main/kotlin/Versions.kt

@@ -1,6 +1,19 @@
-/*
 import org.gradle.api.Project
 
+object Versions {
+    const val TEXT = "3.0.4"
+    const val TEXT_EXTRAS = "3.0.6"
+    const val PISTON = "0.5.6"
+    const val AUTO_VALUE = "1.7.4"
+    const val JUNIT = "5.7.0"
+    const val MOCKITO = "3.7.7"
+    const val SLF4J = "1.7.30"
+    const val LOGBACK = "1.2.3"
+    const val FAST_UTIL = "8.2.1"
+    const val GUAVA = "21.0"
+    const val GSON = "2.8.0"
+}
+
 // Properties that need a project reference to resolve:
 class ProjectVersions(project: Project) {
     val loom = project.rootProject.property("loom.version")
@@ -9,5 +22,3 @@ class ProjectVersions(project: Project) {
 
 val Project.versions
     get() = ProjectVersions(this)
-
- */