Put pom in correct location for Paperclip install to maven local feature

patches/server/0003-Build-system-changes.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Build system changes
 
 
 diff --git a/build.gradle.kts b/build.gradle.kts
-index ccb67fe90e25010f7c8ca168d60d096ef95c4429..f353524ada2caa05824b1e7ded17a1c00473d906 100644
+index 80fab4621582aed02cc029900999ceff72e027ef..07be9eb1dd7f0f85e8a36cc4e8df807bae989372 100644
 --- a/build.gradle.kts
 +++ b/build.gradle.kts
 @@ -22,21 +22,24 @@ repositories {
@@ -47,9 +47,19 @@ index ccb67fe90e25010f7c8ca168d60d096ef95c4429..f353524ada2caa05824b1e7ded17a1c0
          ))
          for (tld in listOf("net", "com", "org")) {
              attributes(mapOf(
-@@ -65,7 +69,7 @@ tasks.jar {
+@@ -73,9 +77,17 @@ configure<PublishingExtension> {
+     }
+ }
  
++val generatePom = tasks.named<GenerateMavenPom>("generatePomFileForMavenPublication")
++
  tasks.shadowJar {
++    // Needed for Paperclip's install to maven local feature
++    from(generatePom) {
++        into("META-INF/maven/io.papermc.paper/paper")
++        rename { "pom.xml" }
++    }
++
      listOf(
 -        "jline", "it.unimi", "org.apache.commons.codec", "org.apache.commons.io",
 +        "jline", "org.apache.commons.codec", "org.apache.commons.io", // Paper - don't relocate fastutil