Add language scaffolding: manifest, gitignore, editorconfig

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+
+[*.{rs,toml}]
+indent_size = 4
+
+[*.{py,dart,json,yaml,yml}]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

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+__pycache__/
+*.py[cod]
+.venv/
+venv/
+*.egg-info/
+dist/
+build/
+.pytest_cache/
+.ruff_cache/
+.mypy_cache/
+
+# Map artifacts and captures are data, never source.
+*.osm.pbf
+*.pmtiles
+*.sqlite
+*.log
+tiles/

pyproject.toml

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+[project]
+name = "tool-mock"
+version = "0.1.0"
+description = "Mocks and fixtures"
+requires-python = ">=3.10"
+dependencies = []
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/yukart_mock"]
+
+[tool.ruff]
+line-length = 100