* #39226: restore Tests module

This commit reactivate unit testing in SFLphone android.
Tests are trivial for now, but will contribute in setting up the whole
testing process with jenkins.
diff --git a/Tests/project.properties b/Tests/project.properties
new file mode 100644
index 0000000..4ab1256
--- /dev/null
+++ b/Tests/project.properties
@@ -0,0 +1,14 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-19