- add ceedling/cmock/unity as testing framework and support

- unified makefile project for the whole repos
- new separate project for tests

.project

@@ -29,10 +29,6 @@
 					<key>org.eclipse.cdt.make.core.buildCommand</key>
 					<value>make</value>
 				</dictionary>
-				<dictionary>
-					<key>org.eclipse.cdt.make.core.buildLocation</key>
-					<value>${workspace_loc:/tinyusb/test}</value>
-				</dictionary>
 				<dictionary>
 					<key>org.eclipse.cdt.make.core.cleanBuildTarget</key>
 					<value>clean</value>