Rsync for Tasker 0.13

• Return a clear error message when a file access permission needs to be granted to the app to allow rsync to read or write a given path.
• Re-title and add some details after the update check toggle in both the Dropbear and rsync actions for clarity.
• Default the update check toggle to off if the app was installed from a store (as the store is likely to manage updates itself).
• Explain the reasons for all requested app permissions in both the readme and project homepage.
• Updated bundled Dropbear binaries to 2024.85.
• Updated bundled rsync binary to 3.3.0.
• Updated dependencies.