#915 - Created app dirs and set as constants in the top-level init.

- renamed _config_values_main to training_config.py and renamed the ConfigValuesMain class to TrainingConfig.
Moved training_config.py to src/primaite/config/training_config.py
- Renamed all training config yaml file keys to make creating an instance of TrainingConfig easier.
Moved action_type and num_steps over to the training config.
- Decoupled the training config and lay down config.
- Refactored main.py so that it can be ran from CLI and can take a training config path and a lay down config path.
- refactored all outputs so that they save to the session dir.
- Added some necessary setup scripts that handle creating app dirs, fronting example config files to the user, fronting demo notebooks to the user, performing clean-up in between installations etc.
- Added functions that attempt to retrieve the file path of users example config files that have been fronted by the primaite setup.
- Added logging config and a getLogger function in the top-level init.
- Refactored all logs entries logged to use a logger using the primaite logging config.
- Added basic typer CLI for doing things like setup, viewing logs, viewing primaite version, running a basic session.
- Updated test to use new features and config structures.
- Began updating docs. More to do here.

src/primaite/utils/package_data.py

@@ -0,0 +1,32 @@
+# Crown Copyright (C) Dstl 2022. DEFCON 703. Shared in confidence.
+import os
+from pathlib import Path
+
+import pkg_resources
+
+from primaite import getLogger
+
+_LOGGER = getLogger(__name__)
+
+
+def get_file_path(path: str) -> Path:
+    """
+    Get PrimAITE package data.
+
+    :Example:
+
+    >>> from primaite.utils.package_data import get_file_path
+    >>> main_env_config = get_file_path("config/_package_data/training_config_main.yaml")
+
+
+    :param path: The path from the primaite root.
+    :return: The file path of the package data file.
+    :raise FileNotFoundError: When the filepath does not exist.
+    """
+    fp = pkg_resources.resource_filename("primaite", path)
+    if os.path.isfile(fp):
+        return Path(fp)
+    else:
+        msg = f"Cannot PrimAITE package data: {fp}"
+        _LOGGER.error(msg)
+        raise FileNotFoundError(msg)