feat: move project from poetry to pdm, rewrite from scratch and add

basic `notebooks`, `edit` and `show` commands

tests/test_utils.py

@@ -1,33 +0,0 @@
-import os
-from pathlib import Path
-
-from halig.utils import resolve_path
-
-
-def test_resolve_absolute_path():
-    path = Path("/foo/bar/baz")
-    assert resolve_path(path) == path
-
-
-def test_resolve_user_path():
-    path = Path("~/foo/bar/baz")
-    assert resolve_path(path) == path.expanduser()
-
-
-def test_resolve_path_with_envvars():
-    os.environ["FOO"] = "foo"
-    os.environ["BAR"] = "bar"
-    path = Path("/${FOO}/${BAR}")
-    assert resolve_path(path) == Path("/foo/bar")
-
-
-def test_resolve_relative_path():
-    path = Path("foo/bar/baz")
-    assert resolve_path(path) == path.resolve()
-
-
-def test_resolve_path_all():
-    os.environ["FOO"] = "foo"
-    os.environ["BAR"] = "bar"
-    path = Path("foo/bar/$FOO/../$BAR")
-    assert resolve_path(path) == Path(os.path.expandvars(path)).resolve().expanduser()