Add a idea.properties file for Studio.

Launching Studio with a custom idea.properties files allows to
have a separate profile of Android Studio for work with AndroidX.

To use this launch Studio with setting STUDIO_PROPERTIES env variable.
This CL also adds an example linux destkop shortcut entry.

https://intellij-support.jetbrains.com/hc/en-us/articles/207240985-Changing-IDE-default-directories-used-for-config-plugins-and-caches-storage?page=2

Test: started studio locally.
Change-Id: I1f430c20c046548b8a11e0547285e0aa43a868f4
diff --git a/development/studio/sample-androidx-canary.desktop b/development/studio/sample-androidx-canary.desktop
new file mode 100644
index 0000000..a50537a
--- /dev/null
+++ b/development/studio/sample-androidx-canary.desktop
@@ -0,0 +1,13 @@
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=Android Studio AndroidX
+
+# Update to the path of your studio
+Icon=/path/to/android-studio/bin/studio.png
+# Update to the paths of your studio and checkout of AndroidX
+Exec=env STUDIO_PROPERTIES=/path/to/androidx/frameworks/support/development/studio/idea.properties "/path/to/android-studio/bin/studio.sh" %f
+
+Categories=Development;IDE;
+Terminal=false
+StartupWMClass=jetbrains-studio