feat: add basic db handler, for tracking counter values

more to come i'm sure, this is all i need so far

docs/api/wuttjamaican.db.handler.rst

@@ -0,0 +1,6 @@
+
+``wuttjamaican.db.handler``
+===========================
+
+.. automodule:: wuttjamaican.db.handler
+   :members:

docs/glossary.rst

@@ -128,6 +128,14 @@ Glossary
      Most :term:`apps<app>` will have at least one :term:`app
      database`.  See also :doc:`narr/db/index`.
 
+   db handler
+     The :term:`handler` responsible for various operations involving
+     the :term:`app database` (and possibly other :term:`databases
+     <database>`).
+
+     See also the :class:`~wuttjamaican.db.handler.DatabaseHandler`
+     base class.
+
    db session
      The "session" is a SQLAlchemy abstraction for an open database
      connection, essentially.

docs/index.rst

@@ -71,6 +71,7 @@ Contents
    api/wuttjamaican.conf
    api/wuttjamaican.db
    api/wuttjamaican.db.conf
+   api/wuttjamaican.db.handler
    api/wuttjamaican.db.model
    api/wuttjamaican.db.model.auth
    api/wuttjamaican.db.model.base