Nextcloud client: Add 3.15.1 RC1

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

metadata/com.nextcloud.client.yml

@@ -1477,6 +1477,22 @@ Builds:
     scandelete:
       - src/androidTest
 
+  - versionName: 3.15.1 RC1
+    versionCode: 30150151
+    commit: rc-3.15.1-01
+    submodules: true
+    gradle:
+      - generic
+    rm:
+      - user_manual
+      - gplay.gradle
+    prebuild:
+      - mkdir -p $HOME/.gradle
+      - echo org.gradle.jvmargs=-Xmx9g -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError
+        > $HOME/.gradle/gradle.properties
+    scandelete:
+      - src/androidTest
+
 MaintainerNotes: 'Latest 3 stable version will be kept, RC versions will be directly
     outdated by either a new RC or by a stable version: 3.3.0 RC1 -> 3.3.0 RC2 ->
     3.3.0 (stable)'