Patch POM to include compile dependencies (#162)

The ffmpeg decoder extension implicitly depends on the androidx.media3 media3-decoder and media3-exoplayer modules, but didn't publish this in its Maven POM. Because Gradle depends on this information for things like bytecode transformations, this could cause apps using this library to crash if required rewrites weren't applied to this library as well.
Thus, we now manually modify the POM to explicitly depend on the public versions of the library dependencies specified in androidx/media:libraries/decoder_ffmpeg/build.gradle.

media3-ffmpeg-decoder/build.gradle.kts

@@ -1,13 +1,18 @@
 import com.android.build.gradle.LibraryExtension
 import com.android.build.gradle.api.LibraryVariant
 import com.android.build.gradle.tasks.BundleAar
+import groovy.namespace.QName
+import groovy.util.Node
 
 plugins {
     `maven-publish`
     signing
 }
 
 val decoderProject = project(":androidx-media-lib-decoder-ffmpeg")
+val decoderReleaseVersion = checkNotNull(decoderProject.ext["releaseVersion"]?.toString()) {
+    "Couldn't read release version from androidx.media3 project"
+}
 val androidExtension = decoderProject.extensions.findByType(LibraryExtension::class.java)
     ?: error("Could not find android extension")
 
@@ -60,6 +65,8 @@ afterEvaluate {
         artifact(javadocJar)
         artifact(sourcesJar)
 
+        println("Version: $decoderReleaseVersion")
+
         pom {
             name.set("Jellyfin AndroidX Media3 libraries - $artifactId")
             description.set("AndroidX Media3 FFmpeg decoder used in the Jellyfin project")
@@ -95,6 +102,14 @@ afterEvaluate {
                     organizationUrl.set("https://jellyfin.org")
                 }
             }
+
+            withXml {
+                // Make implicit dependency on androidx.media3 modules explicit by including them in the POM
+                asNode().getOrCreateNode("dependencies").apply {
+                    appendDependency("androidx.media3", "media3-decoder", decoderReleaseVersion)
+                    appendDependency("androidx.media3", "media3-exoplayer", decoderReleaseVersion)
+                }
+            }
         }
     }
 
@@ -110,3 +125,17 @@ afterEvaluate {
         }
     }
 }
+
+fun Node.getOrCreateNode(name: String): Node {
+    return getAt(QName(name)).firstOrNull() as Node? ?: appendNode(name)
+}
+
+fun Node.appendDependency(group: String, id: String, version: String) {
+    appendNode("dependency").apply {
+        appendNode("groupId", group)
+        appendNode("artifactId", id)
+        appendNode("version", version)
+        appendNode("scope", "compile")
+        appendNode("type", "aar")
+    }
+}