fix: Fix missing dependencies in project plugin

gradle-project-plugin/build.gradle.kts

@@ -4,6 +4,11 @@ plugins {
 
 description = "This is the main plugin providing utilities through a Gradle extension."
 
+dependencies {
+    implementation(libs.gson)
+    compileOnly(libs.fabric.loom.remap)
+}
+
 gradlePlugin {
     val projectPlugin by plugins.creating {
         id = "de.siphalor.minecraft-modding-toolkit.project-plugin"