Add ability to open FAQ and Guide, and Changelog in extension repository (#6469)

app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionLoader.kt

@@ -35,6 +35,8 @@ internal object ExtensionLoader {
     private const val METADATA_SOURCE_CLASS = "tachiyomi.extension.class"
     private const val METADATA_SOURCE_FACTORY = "tachiyomi.extension.factory"
     private const val METADATA_NSFW = "tachiyomi.extension.nsfw"
+    private const val METADATA_HAS_README = "tachiyomi.extension.hasReadme"
+    private const val METADATA_HAS_CHANGELOG = "tachiyomi.extension.hasChangelog"
     const val LIB_VERSION_MIN = 1.2
     const val LIB_VERSION_MAX = 1.3
 
@@ -139,6 +141,9 @@ internal object ExtensionLoader {
             return LoadResult.Error("NSFW extension $pkgName not allowed")
         }
 
+        val hasReadme = appInfo.metaData.getInt(METADATA_HAS_README, 0) == 1
+        val hasChangelog = appInfo.metaData.getInt(METADATA_HAS_CHANGELOG, 0) == 1
+
         val classLoader = PathClassLoader(appInfo.sourceDir, null, context.classLoader)
 
         val sources = appInfo.metaData.getString(METADATA_SOURCE_CLASS)!!
@@ -180,6 +185,8 @@ internal object ExtensionLoader {
             versionCode,
             lang,
             isNsfw,
+            hasReadme,
+            hasChangelog,
             sources = sources,
             pkgFactory = appInfo.metaData.getString(METADATA_SOURCE_FACTORY),
             isUnofficial = signatureHash != officialSignature,