Add some README badges.

Author: itsjohncs

README.md

@@ -1,5 +1,10 @@
 # timcol
 
+[![PyPI - Version](https://img.shields.io/pypi/v/timcol)](https://test.pypi.org/project/timcol)
+[![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/itsjohncs/timcol/tox-tests.yml)](https://github.com/itsjohncs/timcol/actions/workflows/tox-tests.yml)
+[![GitHub License](https://img.shields.io/github/license/itsjohncs/timcol)](https://github.com/itsjohncs/timcol/blob/main/LICENSE)
+[![Ruff](https:d//img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
+
 `timcol` helps you track your time in a plaintext format compatible with [Ledger-CLI](https://ledger-cli.org). Similar tools exist within the [plain text accounting ecosystem](https://plaintextaccounting.org/#time-logging).
 
 It can help you generate basic HTML or CSV invoices and even give them live updates via the flexible `upload (sync)` command.