Add versioning scripts and update README for packaging instructions

README.md

@@ -43,6 +43,32 @@ Install development dependencies when you want tests and code generation tooling
 & .\.venv\Scripts\python.exe -m pip install -e .[dev]
 ```
 
+## Packaging
+
+Print the current package version:
+
+```powershell
+& .\.venv\Scripts\python.exe .\scripts\set_version.py --print-current
+```
+
+Update the package version in `pyproject.toml`:
+
+```powershell
+& .\.venv\Scripts\python.exe .\scripts\set_version.py 0.1.1
+```
+
+Build a wheel into `dist\`:
+
+```powershell
+& .\.venv\Scripts\python.exe .\scripts\build_wheel.py
+```
+
+Set the version and build the wheel in one step:
+
+```powershell
+& .\.venv\Scripts\python.exe .\scripts\build_wheel.py --version 0.1.1
+```
+
 Create a client with your eBay credentials:
 
 ```python