Update project structure and move to beancount

pyproject.toml

@@ -0,0 +1,40 @@
+[build-system]
+requires = ["setuptools", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "toldg"
+version = "0.1.0"
+description = "Tool to generate ledger files from csv"
+readme = "README.md"
+requires-python = ">=3.12,<4.0"
+license = {text = "MIT"}
+authors = [
+    {name = "Felix Martin", email = "mail@felixm.de"}
+]
+dependencies = [
+    "fava (>=1.30.1,<2.0.0)",
+    "pydantic (>=2.10.6,<3.0.0)",
+    "beancount (>=3.1.0,<4.0.0)",
+    "rich (>=13.9.4,<14.0.0)"
+]
+
+[tool.poetry.group.dev.dependencies]
+pre-commit = "^4.1.0"
+black = "^25.1.0"
+isort = "^6.0.1"
+pytest = "^8.3.4"
+
+[project.scripts]
+toldg = "toldg.__main__:main"
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+
+[tool.black]
+line-length = 88
+target-version = ["py312"]
+
+[tool.isort]
+profile = "black"
+line_length = 88