Prevent dev dependency on Text Placeholder API.

For whatever reason, ModMenu was not generating dependency info previously, but now it started to in 26.1.  Switching Text Placeholder API to include + compileOnly (instead of include + implementation) should avoid this inconveniencing people with a dev dependency on ModMenu.

- Prevent dev dependency on Text Placeholder API

Author: gniftygnome

build.gradle

@@ -15,7 +15,7 @@ dependencies {
     implementation include(fabricApi.module("fabric-key-mapping-api-v1", project.fabric_version))
     implementation include(fabricApi.module("fabric-lifecycle-events-v1", project.fabric_version))
 
-    implementation include("eu.pb4:placeholder-api:${project.text_placeholder_api_version}")
+    compileOnly include("eu.pb4:placeholder-api:${project.text_placeholder_api_version}")
 
 	compileOnly "org.quiltmc:quilt-loader:$project.quilt_loader_version"
 }