Add bundled install extras. (#4443)

* add an `[all]` extras_requires

* can go here

* add a [dev] which includes [all] + development extras (style, test, docs)

* special case all and dev in update message

* Optimize by changing the place of the check for "special" extras

Co-authored-by: jack1142 <6032823+jack1142@users.noreply.github.com>

setup.cfg

@@ -111,6 +111,13 @@ test =
     six==1.15.0
     toml==0.10.1
     wrapt==1.12.1
+all =
+    %(postgres)s
+dev =
+    %(all)s
+    %(docs)s
+    %(style)s
+    %(test)s
 
 [options.entry_points]
 console_scripts =