Create a new Android Keyboard to type PUA Unicode code points

[andreweskeclarke]

We want to create new glyphs in the Unicode private use area (U+E000–U+F8FF) in the Basic Multilingual Plane. However, to type these characters, we need a new keyboard with the correct mappings.

Create an Android keyboard that shows at least one private use Unicode code point, and allows the user to enter that code point into EditTexts. At this point, the Unicode point does not have to have an associated glyph.