feat: add fmt_engineering() (#786)

* Add engineering notation formatting method

* Update _formats_vals.py

* Update vals.py

* Update test_formats.py

* Add GT.fmt_engineering to reference API

* Add tests for some fmt_engineering() edge cases

* Add tests for engineering notn formatter function

* Refactor vals.py imports and update Ruff config

* Remove redundant import in fmt_engineering_context()

* Remove unused engineering notation function

* Remove sep_mark parameter from engineering format functions

* Reorder and clean up imports in _formats_vals.py

* Simplify engineering format test cases

* Remove sep_mark arg from eng formatters

* Include simple example to start off section

Author: rich-iannone

.vscode/settings.json

@@ -17,5 +17,7 @@
   },
   "python.testing.pytestArgs": ["tests"],
   "python.testing.unittestEnabled": false,
-  "python.testing.pytestEnabled": true
+  "python.testing.pytestEnabled": true,
+  "ruff.format.args": ["--exclude", "great_tables/vals.py"],
+  "ruff.lint.args": ["--exclude", "great_tables/vals.py"]
 }

docs/_quarto.yml

@@ -139,6 +139,7 @@ quartodoc:
         - GT.fmt_integer
         - GT.fmt_percent
         - GT.fmt_scientific
+        - GT.fmt_engineering
         - GT.fmt_currency
         - GT.fmt_bytes
         - GT.fmt_roman