all: Format with black.

Also activate auto formatting. Bump flake8 and mark black
disagreements in setup.cfg.

examples/pup/remote/set_name.py

@@ -7,6 +7,6 @@ my_remote = Remote()
 print(my_remote.name())
 
 # Choose a new name.
-my_remote.name('truck2')
+my_remote.name("truck2")
 
 print("Done!")

examples/pup/remote/use_name.py

@@ -2,7 +2,7 @@ from pybricks.pupdevices import Remote
 from pybricks.tools import wait
 
 # Connect to a remote called truck2.
-truck_remote = Remote('truck2', timeout=None)
+truck_remote = Remote("truck2", timeout=None)
 
 print("Connected!")