🔨 Add Makefile to expose common developer commands

[rickwporter]

When switching projects, it is sometimes difficult to recall the commands that should be run for common developer tasks. A Makefile with help provides an easy means to document the commands.

Here's an example:

(typer) % make

Usage:
  make 

General
  help             Print this message
  clean            Removes all bulid/test artifacts

Tests
  test             Run tests
  cov              Runs tests and produces HTML coverage report

Docs
  docs-build       Build docs
  docs-status      Check docs status

Lint
  lint-check       Perform all linting (ruff, ty, and mypy)
  lint-fix         Attempt to fix linting issues
  mypy-check       Perform mypy checking
  ty-check         Perform ty checks
  ruff-check       Perform ruff formatting checks
  ruff-format      Formats files
(typer) % make lint-check
uv run ruff check
All checks passed!
uv run ty check typer
All checks passed!
uv run mypy typer
Success: no issues found in 16 source files
(typer) %