Clean up test code

Separate/consolidate board initialization code, and a few functions
that are shared across tests. Update the Makefile accordingly.

Resolves #18

.gitlab-ci.yml

@@ -8,8 +8,8 @@ variables:
     - make -C ./firmware/
   artifacts:
     paths:
-      - "firmware/Test/*.elf"
-      - "firmware/Test/*.bin"
+      - "firmware/Test/Apps/*.elf"
+      - "firmware/Test/Apps/*.bin"
       - "firmware/Application/*.elf"
       - "firmware/Application/*.bin"
 
@@ -32,7 +32,7 @@ test-watch:
     - privileged
   image: registry.gitlab.maxregan.me/max/timely-reference/test-exec
   script:
-    - test/src/tr_test/test.py --junitxml=test-report.xml
+    - test/src/tr_test/test.py -v --durations=0 --junitxml=test-report.xml
   artifacts:
     reports:
       junit: test-report.xml