chore: remove flatpak directory and update version

- Remove flatpak configuration files (not needed for desktop app)
- Update Cargo.toml version to 1.1.0
- No android/ios directories found (project is desktop-only)

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Co-Authored-By: Claude <noreply@anthropic.com>

Author: Lib-LOCALE

flatpak/FLATHUB_SUBMISSION.md

@@ -1,6 +1,6 @@
 [package]
 name = "tomatotask"
-version = "1.0.19"
+version = "1.1.0"
 description = "An intuitive Pomodoro timer with integrated TodoList for productivity and time management."
 authors = ["AnthonyMahe <anthony.mahe@example.com>"]
 license = "MIT"