Add Maven publishing configuration for JitPack support

- Registered a root-level task to publish to Maven local
- Configured Maven publishing in the android-pdf-viewer module with sources JAR and POM details
- Set group and version properties for the publication

Author: xposed73

android-pdf-viewer/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.library'
+apply plugin: 'maven-publish'
 
 ext {
     bintrayRepo = 'maven'
@@ -63,3 +64,39 @@ dependencies {
     api 'io.github.oothp:pdfium-android:1.9.5-beta01'
 }
 
+// Configure Maven publishing for JitPack
+group = project.findProperty("group") ?: "com.github.xposed73"
+version = project.findProperty("version") ?: "1.0.0"
+
+def androidSourcesJar = tasks.register('androidSourcesJar', Jar) {
+    archiveClassifier.set('sources')
+    from android.sourceSets.main.java.srcDirs
+}
+
+afterEvaluate {
+    publishing {
+        publications {
+            release(MavenPublication) {
+                from components.release
+                groupId = project.group
+                artifactId = "AndroidPdfViewer"
+                version = project.version as String
+                artifact androidSourcesJar.get()
+                pom {
+                    name = "AndroidPdfViewer"
+                    description = "Android view for displaying PDFs rendered with PdfiumAndroid"
+                    licenses {
+                        license {
+                            name = "The Apache Software License, Version 2.0"
+                            url = "http://www.apache.org/licenses/LICENSE-2.0.txt"
+                        }
+                    }
+                    scm {
+                        url = "https://github.com/xposed73/AndroidPdfViewer"
+                    }
+                }
+            }
+        }
+    }
+}
+

build.gradle

@@ -25,3 +25,8 @@ subprojects {
         }
     }
 }
+
+// Ensure a root-level publishToMavenLocal exists for JitPack
+tasks.register("publishToMavenLocal") {
+    dependsOn(subprojects.collect { it.tasks.matching { it.name == "publishToMavenLocal" } })
+}