Flet-navigator

- **Implemented `route` decorator.**
- **Finished animations: improved fade animations, added more animations, more customizable.**
- **Updated documentation.**
- **Updated ReadMe.**
- **New version.**

- **Made `template` arguments optional.**
- **Implemented page ID's.**
- **Each appbar for each page. (Issue 4).**
- **Updated documentation.**
- **Updated ReadMe.**
- **New version.**

- **Code improvements.**

- **Now templates can return widgets (controls).**
- **Updated documentation.**
- **Updated ReadMe.**
- **New version / patch.**

- **Implement fade animation between pages switching (BETA).**
- **Implemented templates.**
- **Fallback if developer tries to use URL parameters in `VirtualFletNavigator`.**
- **Added typehints.**
- **Updated documentation.**
- **Updated ReadMe.**
- **New version.**

- **Completely (?) fixed URL parameters parser.**