InfiniTime 1.1 "Dragon Fruit" : Steps, Timer and many other improvements!

I'm happy to release InfiniTime 1.1.0 Dragon Fruit, the first update since we released InfiniTime 1.0.
This release brings many improvements, fixes and functionalities.

We have 2 new apps : Steps and Timer!
Steps (by @joaquimorg) displays your step count of the day and your progress according to your step goal. You can specify your step goal in a new entry in the Settings application.

Timer (by @Raupinger) is a timer application : set a duration, start the timer and you'll be notified when the time's elapsed. Quite handy when you cook eggs or pasta for example :)

Many improvements have been done on the UI : long notification titles handling by @Raupinger, better detection of the charger to display the power indicator accordingly (by @DavidVentura) and the heart rate indicator is now greyed out when the sensor is not activated.

I would also like to highlight @Avamander work. Avamander works behind the scene to keep the code clean and tidy thanks to multiple PRs to introduce clang-format and clang-tidy configuration files, reformat the code using these tools and refactor parts of the code to keep it consistent. This work is not as visible as user facing features but it's really important for the maintainability of the project in the long term!

We also fixed a few bugs like that crash in the Stopwatch app (by @MFAshby).

Finally, the documentation got many improvements, typos and fixes, and I also wrote a new Getting started guide for InfiniTime 1.0.