New product name and other changes

We made a mistake at the beginning of the project by not conducting a thorough search for names in the market. We discovered that there were already other launchers called Flow, so we decided to change the name to Flua, which means "flow" in Portuguese.

Added: 12h clock format. There is also a new option for toggling AM/PM.

Fix: wallpaper blur not applying when wallpaper is added through the Gallery app.

Removed: Wallpaper blur – we have removed the blur from the wallpaper displayed on the index screen and widget backgrounds. Due to some Android limitations, when the user added a wallpaper through third-party apps, the blur was not applied. We were considering using blur only when the wallpaper was added through the launcher, but this added complexity to the code, so we decided to remove blur. Now we display an overlay with opacity control.