my.coding.commits: actually test on CI, add config stub

tox.ini

@@ -34,6 +34,8 @@ commands =
     # my.body.weight dep
     hpi module install my.orgmode
 
+    pip install gitpython # my.commits dep
+
     python3 -m pytest tests \
             # ignore some tests which might take a while to run on ci..
             --ignore tests/takeout.py        \
@@ -77,6 +79,7 @@ commands =
     hpi module install my.stackexchange.stexport
     hpi module install my.pinboard
     hpi module install my.arbtt
+    pip install gitpython # my.commits dep
 
     # todo fuck. -p my.github isn't checking the subpackages?? wtf...
     # guess it wants .pyi file??
@@ -96,6 +99,7 @@ commands =
                     -p my.time.tz.via_location        \
                     -p my.calendar.holidays           \
                     -p my.arbtt                       \
+                    -p my.coding.commits              \
                     --txt-report  .coverage.mypy-misc \
                     --html-report .coverage.mypy-misc \
                     {posargs}