generate room schema definition for documentation

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/build.gradle

@@ -81,6 +81,12 @@ android {
             disable 'VectorPath'
         }
 
+        javaCompileOptions {
+            annotationProcessorOptions {
+                arguments += ["room.schemaLocation": "$projectDir/schemas".toString()]
+            }
+        }
+
         testInstrumentationRunnerArgument "TEST_SERVER_URL", "${NC_TEST_SERVER_BASEURL}"
         testInstrumentationRunnerArgument "TEST_SERVER_USERNAME", "${NC_TEST_SERVER_USERNAME}"
         testInstrumentationRunnerArgument "TEST_SERVER_PASSWORD", "${NC_TEST_SERVER_PASSWORD}"