Implements jeaddons CLI tool

Adds a CLI tool to copy files or folders from a git repository into the current project based on a registry.

The tool provides commands to:
- `add`: Copies files/folders based on registry entries.
- `list`: Lists available registry entries.

Registry entries are defined in `jeAddons/registry.py`.
The tool supports overriding the registry's ref and destination.

pyproject.toml

@@ -1,12 +1,20 @@
 [project]
 name = "jeaddons"
 version = "0.1.0"
-description = "Add your description here"
+description = "CLI to copy files or folders from a git repo into your current project"
 readme = "README.md"
 requires-python = ">=3.14"
 dependencies = [
     "typer>=0.21.1",
 ]
 
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["jeAddons"]
+
 [project.scripts]
-jeAddons= "jeAddons.cli:app"
+jeAddons= "jeAddons.cli:app"
+jeaddons = "jeAddons.cli:app"