v0.18.0

Changelog

• 31ef1bf Fix for subprocess.run() encoding on Windows (#2283)
• dcf6f60 Bump Flet version to 0.18.0
• 9f97fdd flet build command to package Flet app for any platform (#2271)
• 6c4e475 Added TextStyle for the Text control (#2270)
• cf82811 Refactor code, add Enum deprecation utils (#2259)
• 89c89c1 CupertinoAppBar control (#2278)
• 5e20cff Fix AlertDialog content updating (#2277)
• c357207 convert 'key' to a super parameter (#2258)
• 42e9e5d Fix FLET_VIEW_PATH ignored on linux (#2244)
• 9b6e968 MenuBar, SubMenuButton and MenuItemButton controls (#2252)