[Lint] Set 99 char line length and bulk reformat

Set up ruff to enforce a 99 char line limit, mirroring other OpenAssetIO
projects.

Configure yml with 2-space tabs, mirroring other OpenAssetIO projects
(and the ComfyUI cookiecutter project's defaults).

Bulk reformat using PyCharm configured to use ruff - i.e. Python files
are reformatted using ruff, whilst other files are reformatted
according to .editorconfig and/or PyCharm defaults.

Signed-off-by: David Feltell <david.feltell@foundry.com>

.github/workflows/build-pipeline.yml

@@ -16,8 +16,8 @@ jobs:
       PYTHONIOENCODING: "utf8"
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        python-version: ["3.12"]
+        os: [ ubuntu-latest ]
+        python-version: [ "3.12" ]
 
     steps:
       - uses: actions/checkout@v4