Overrides check

[Christian-B]

This pr is in a few parts.

1. overrides method now checks that the parameters are all typed.

• Both the overidden and overriding methods are required to be fully typed.
  • Except if the overides has a adds_typing=True then only the overriding is checked
• It does not check the types mypy does that
• off by default but turned on by
  • call to overrides.check_types which is done in as many tests as possible
    • works well when test are run one at a time not when in parallel
  • Environment Variable TYPE_OVERRIDES
    • set by Github actions and Jenkins

2. Improved typing in the ranged stuff

3. Added types to many methods

Must be done after:
SpiNNakerManchester/SpiNNMan#386
SpiNNakerManchester/PACMAN#537
SpiNNakerManchester/SpiNNFrontEndCommon#1150
SpiNNakerManchester/TestBase#53
SpiNNakerManchester/sPyNNaker#1425
SpiNNakerManchester/SupportScripts#67
SpiNNakerManchester/SpiNNakerGraphFrontEnd#268
SpiNNakerManchester/SpiNNGym#86
SpiNNakerManchester/MarkovChainMonteCarlo#60
SpiNNakerManchester/SpiNNaker_PDP2#84
SpiNNakerManchester/SupportScripts#67
SpiNNakerManchester/sPyNNakerNewModelTemplate#110

Tested by:
SpiNNakerManchester/IntegrationTests#255

[Christian-B]

SpiNNakerManchester/SpiNNMachine#233 was used to test the error came in the correct place.

http://apollo.cs.man.ac.uk:8080/blue/organizations/jenkins/Integration%20Tests/detail/overrides_check/1/pipeline/
Shows what happened the CI env was used
failed on Spynnaker.setup which was too early

http://apollo.cs.man.ac.uk:8080/blue/organizations/jenkins/Integration%20Tests/detail/overrides_check/4/pipeline/
Shows it failing in the correct place

[coveralls]

coverage: 88.179% (-0.2%) from 88.391%
when pulling fb779e0 on overrides_check
into 1aae7f5 on master.

[rowleya]

Looks good - consider this approval of the rest if the test passes!