Add workspace abstraction (#2982)

* Add workspace abstraction

* Remove old workspace implementation

* Extract path resolution to a helper function

* Add api key requirements to new tests

tests/conftest.py

@@ -1,3 +1,19 @@
+from pathlib import Path
+
+import pytest
 from dotenv import load_dotenv
 
+from autogpt.workspace import Workspace
+
 load_dotenv()
+
+
+@pytest.fixture()
+def workspace_root(tmp_path) -> Path:
+    return tmp_path / "home/users/monty/auto_gpt_workspace"
+
+
+@pytest.fixture()
+def workspace(workspace_root: Path) -> Workspace:
+    workspace_root = Workspace.make_workspace(workspace_root)
+    return Workspace(workspace_root, restrict_to_workspace=True)