Add backend structure with Docker support and initial configuration files

Signed-off-by: Dmitrii <computer@yawaflua.tech>

Took 4 hours 25 minutes

build.gradle

@@ -28,17 +28,11 @@ fabricApi {
 }
 
 repositories {
-    // Add repositories to retrieve artifacts from in here.
-    // You should only use this when depending on other mods because
-    // Loom adds the essential maven repositories to download Minecraft and libraries from automatically.
-    // See https://docs.gradle.org/current/userguide/declaring_repositories.html
-    // for more information about repositories.
-
     maven { url "https://maven.shedaniel.me/" }
+    maven { url "https://maven.terraformersmc.com/" }
 }
 
 dependencies {
-    // To change the versions see the gradle.properties file
     minecraft "com.mojang:minecraft:${project.minecraft_version}"
     mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
     modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
@@ -49,6 +43,8 @@ dependencies {
         exclude(group: "net.fabricmc.fabric-api")
     }
 
+    modCompileOnly "com.terraformersmc:modmenu:11.0.3"
+
     include(implementation("org.xerial:sqlite-jdbc:3.46.1.3"))
     include(clientImplementation("com.google.zxing:core:${project.zxing_version}"))
     include(clientImplementation("com.google.zxing:javase:${project.zxing_version}"))