Added prompt templates and project structure overview.

README.md

@@ -22,6 +22,25 @@ poetry install
 
 See [Tutorial](https://github.com/mobiusml/aana_sdk/blob/main/docs/tutorial.md) for more information on how to build your application.
 
+## Project structure
+
+```
+aana_app_project/             | top level source code directory for the project
+├── config/                   | various configs, including settings, deployments and endpoints
+│   ├── endpoints.py          | list of endpoints to deploy
+│   ├── deployments.py        | list of deployments (models) to deploy
+│   └── settings.py           | app settings
+├── core/                     | core models and functionality
+│   ├── models/               | data models
+│   └── prompts/              | prompt templates for LLMs
+├── deployments/              | custom deployments
+├── endpoints/                | endpoint classes for the app
+├── exceptions/               | custom exception classes
+├── utils/                    | various utility functionality
+└── app.py                    | main application file
+```
+
+
 ## Installation
 
 To install the project, follow these steps:

aana_app_project/core/prompts/loader.py

@@ -0,0 +1,25 @@
+from jinja2 import Environment, PackageLoader, Template
+
+
+def get_prompt_template(name: str) -> Template:
+    """Load a prompt template by name.
+
+    Use this function to load a prompt templates for LLMs:
+
+    ```python
+    from aana_app_project.prompts.loader import get_prompt_template
+
+    template = get_prompt_template("test")
+    prompt = template.render(your_variable="your_value")
+    ```
+
+    Args:
+        name (str): The name of the prompt template.
+
+    Returns:
+        Template: The prompt template.
+    """
+    env = Environment(loader=PackageLoader(
+        "aana_app_project", "core", "prompts"))
+    template = env.get_template(f"{name}.j2")
+    return template

aana_app_project/core/prompts/test.j2

@@ -0,0 +1 @@
+Define your prompts for LLMs here. Use jinja2 templating to include variables like {{ your_variable }}.

aana_app_project/exceptions/core.py

@@ -0,0 +1 @@
+from aana.exceptions.core import BaseException