[DEV] Fix some jenkins configs (#10)

* [no-orbit] [DEV] Fix some jenkins configs

* [DEV] Fix Patches and use correct MCFormatter versions for older MC versions

* [CHORE] Update readme and remove GitHub action

---------

Co-authored-by: fdd-orbit <orbit@firstdark.dev>
Co-authored-by: hypherionmc <hypherionmc@gmail.com>

patches/1.20.4/.jenkins/Jenkinsfile.snapshot.patch

@@ -11,9 +11,9 @@
 -            image "registry.firstdark.dev/java21:latest"
 +            image "registry.firstdark.dev/java17:latest"
              alwaysPull true
+             args '-v gradle-cache:/home/gradle/.gradle'
          }
-     }
-@@ -29,14 +30,14 @@
+@@ -34,14 +35,14 @@
  
          stage("Build") {
              steps {
@@ -30,11 +30,11 @@
                  }
              }
          }
-@@ -52,7 +53,7 @@
+@@ -57,7 +58,7 @@
                  projectName: "${projectName}",
                  projectIcon: "${projectIcon}",
-                 modLoaders: "forge|neoforge|fabric|quilt",
--                minecraftVersions: "1.20.6",
+                 modLoaders: "neoforge|fabric|quilt",
+-                minecraftVersions: "1.21",
 +                minecraftVersions: "1.20.4",
                  failWebhook: env.SSS_WEBHOOK,
                  publishWebhooks: "${env.SSS_WEBHOOK}|${env.FDD_WH}"