Include ViaBackwards and ViaRewind by default as well

Now that legacy versions are split off we can include these two addons by default as most users of 1.8/1.12 are going to need them anyway.

build.gradle

@@ -158,6 +158,8 @@ dependencies {
     mappings("net.legacyfabric:yarn:1.13.2+build.541:v2")
 
     includeJ8("com.viaversion:viaversion:${rootProject.viaver_version}")
+    includeJ8("com.viaversion:viabackwards:${rootProject.viaback_version}")
+    includeJ8("com.viaversion:viarewind:${rootProject.viarewind_version}")
 }
 
 remapJar {

gradle.properties

@@ -3,6 +3,8 @@ org.gradle.jvmargs=-Xms32M -Xmx4G -XX:+UseG1GC -XX:+UseStringDeduplication
 
 loader_version=0.16.0
 viaver_version=5.0.4-SNAPSHOT
+viaback_version=5.0.4-SNAPSHOT
+viarewind_version=4.0.3-SNAPSHOT
 
 publish_mc_versions=1.12.2, 1.8.9
 # example: 1.19.1-rc1. Can be a blank value