Add Fastlane metadata and F-Droid build config

Fastlane structure:
- short_description.txt (< 80 chars)
- full_description.txt (feature list)
- changelogs/1.txt (v1.0.0 release notes)
- images/icon.png (512x512 from logo SVG)

Build config:
- dependenciesInfo disabled (F-Droid requirement)

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>
Co-Authored-By: Claude Opus 4.6 (1M context)

androidApp/build.gradle.kts

@@ -39,6 +39,11 @@ android {
         }
     }
 
+    dependenciesInfo {
+        includeInApk = false
+        includeInBundle = false
+    }
+
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_11
         targetCompatibility = JavaVersion.VERSION_11