Add various vector functions

- map()
- Bool vectors
- any(), all(), comparison functions

Example:

all(lessThan(abs(v1 - v0), epsilon))

Bug: 32984164
Test: vec_test
Change-Id: I7d030387f5a280a499ea480015b69138cef38459
diff --git a/include/ui/vec2.h b/include/ui/vec2.h
index fdd2e20..308d2b8 100644
--- a/include/ui/vec2.h
+++ b/include/ui/vec2.h
@@ -118,6 +118,7 @@
 typedef details::TVec2<uint16_t> ushort2;
 typedef details::TVec2<int8_t> byte2;
 typedef details::TVec2<uint8_t> ubyte2;
+typedef details::TVec2<bool> bool2;
 
 // ----------------------------------------------------------------------------------------
 }  // namespace android