examples: group python examples - dbus vs. gi

Move examples using dbus-python ('dbus' module) and GObject introspection into
their own directories.

examples/python/Makefile.am

@@ -1,14 +1,2 @@
-EXTRA_DIST = \
-	nm-state.py \
-	add-connection.py \
-	add-system-wifi-connection.py
-	vpn.py \
-	update-secrets.py \
-	list-connections.py \
-	show-bssids.py \
-	disconnect-device.py \
-	get-active-connection-uuids.py \
-	list-devices.py \
-	goi-list-connections.py \
-	goi-device-state-ip4config.py \
-	goi-firewall-zone.py
+SUBDIRS= dbus gi
+

examples/python/dbus/Makefile.am

@@ -0,0 +1,11 @@
+EXTRA_DIST = \
+	nm-state.py \
+	add-connection.py \
+	add-system-wifi-connection.py
+	vpn.py \
+	update-secrets.py \
+	list-connections.py \
+	show-bssids.py \
+	disconnect-device.py \
+	get-active-connection-uuids.py \
+	list-devices.py

examples/python/gi/Makefile.am

@@ -0,0 +1,4 @@
+EXTRA_DIST = \
+	list-connections.py \
+	device-state-ip4config.py \
+	firewall-zone.py