Added async explain_sql API

Author: aosingh

doc/README.md

@@ -1,7 +1,7 @@
 Sphinx is used to generate documentation
 
 ```text
-python -m pip install sphinx
+python -m pip install -r requirements.txt
 ```
 
 For more information on Sphinx, please visit this page:

examples/async_examples/1_sql.py

@@ -32,6 +32,7 @@ async def main():
     sql_tasks = [
         async_profile.show_sql(prompt="How many customers?"),
         async_profile.run_sql(prompt="How many promotions"),
+        async_profile.explain_sql(prompt="How many promotions"),
     ]
     # Collect results from multiple asynchronous tasks
     for sql_task in asyncio.as_completed(sql_tasks):

src/select_ai/async_profile.py

@@ -305,6 +305,17 @@ async def narrate(self, prompt, params: Mapping = None) -> str:
             prompt, action=Action.NARRATE, params=params
         )
 
+    async def explain_sql(self, prompt: str, params: Mapping = None):
+        """Explain the generated SQL
+
+        :param str prompt: Natural language prompt
+        :param params: Parameters to include in the LLM request
+        :return: str
+        """
+        return await self.generate(
+            prompt, action=Action.EXPLAINSQL, params=params
+        )
+
     async def run_sql(
         self, prompt, params: Mapping = None
     ) -> pandas.DataFrame: