📦 Pdm (#7)

# PDM
Migrates to pdm and `pyproject.toml` for dependency management.

## version
- Adds `__version__` to `_version.py`
- Import into main namespace in `__init__.py`
- Adds dynamic versioning with pdm

holophonor/__init__.py

@@ -1,3 +1,4 @@
+from ._version import __version__
 from pluggy import HookimplMarker
 
 holoimpl = HookimplMarker("holophonor")

holophonor/_version.py

@@ -0,0 +1 @@
+__version__ = '0.1.0'

pyproject.toml

@@ -0,0 +1,32 @@
+[project]
+name = "holophonor"
+dynamic = ["version"]
+description = "Live looping, unlimited!"
+authors = [{ name = "Quaternion Media", email = "[email protected]" }]
+dependencies = ["pluggy~=1.0", "python-rtmidi~=1.4", "loguru~=0.6"]
+requires-python = ">=3.8.1, < 4"
+readme = "README.md"
+license = { text = "MIT" }
+
+[tool.pdm]
+version = { source = "file", path = "holophonor/_version.py" }
+
+[project.scripts]
+holophonor = "holophonor.main:main"
+
+[build-system]
+requires = ["pdm-backend"]
+build-backend = "pdm.backend"
+
+[tool.ruff]
+ignore = [
+    # line too long
+    "E501",
+    # Ambiguous variable names
+    "E741",
+    # imported but unused
+    "F401",
+    # star imports
+    "F403",
+    "F405",
+]