Text: Add a new sample

Create the sample project with the first demo.

Change-Id: Iaa4aa711bbff053851b9a569795e1a36193bd23e

Author: yaraki

Text/.gitignore

@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

Text/app/.gitignore

@@ -0,0 +1 @@
+/build