Feature/dev container

[davidhopkinson26]

Adds devcontainer files to project so developers can automatically have an appropriate environment set up in codespaces.

Currently using a python 3.8 container image and then installing requirements-dev.txt. Also installs some default vscode extensions (pylance and gitlens).

Welcome suggestions for other extensions to add by default.

[davidhopkinson26]

for some reason black/flake8 are passing on checks but still making changes when I run them locally despite versions being identical. Unsure why and leaving without changes for now.

[davidhopkinson26]

Considered adding ms-python.black-formatter to default extensions as black formatting on save is a handy feature however:

• it is in preview
• it has a minimum supported version of black=23.3.0. This would be ok for now but if it changes in future it could create a conflict.
• updates are saved as typed in codespaces so unsure how the format on save functionality works in that context

[Sarah-TaylorKnight]

All looks good and helps out with codespaces! There's a conflict left on CHANGELOG.rst but once that's resolved I'll approve

[davidhopkinson26]

All looks good and helps out with codespaces! There's a conflict left on CHANGELOG.rst but once that's resolved I'll approve

fixed in 4d6434e

[Sarah-TaylorKnight]

Great thanks