New composer screen 2020

• New camera package added
• Camera component with cam switching and flash selector
• Poster component
• Screen layout
• Full screen support removing nav bar on android and status bar
• Animated record button
• Confirm image or video screen
• Image preview component with limited aspectRatio
• Fix keyboard dissmis issue on poster step
• Fix issue with gifs on iOS
• Gallery picker
• Update image picker package
• Image and video capture logic
• embeed support
• remind preview
• remind poster
• post options menu
• Tags screen
• Title support on Activity component
• NSFW screen
• License screen
• Schedule screen
• Monetize screen

closes #1901 (closed) #1904 (closed) #1903 (closed) #1744 (closed) #1962 (closed) #1897 (closed) #1973 (closed) #1974 (closed) #1972 (closed) #1977 (closed) #1984 (closed) #1992 (closed) #1825 (closed) #1746 (closed)