fix: Remove kwargs from all RagTools (#285)

* fix: remove kwargs from all (except mysql & pg) RagTools

The agent uses the tool description to decide what to propagate when a tool with **kwargs is found, but this often leads to failures during the tool invocation step.

This happens because the final description ends up like this:

```
CrewStructuredTool(name='Knowledge base', description='Tool Name: Knowledge base
Tool Arguments: {'query': {'description': None, 'type': 'str'}, 'kwargs': {'description': None, 'type': 'Any'}}
Tool Description: A knowledge base that can be used to answer questions.')
```

The agent then tries to infer and pass a kwargs parameter, which isn’t supported by the schema at all.

* feat: adding test to search tools

* feat: add db (chromadb folder) to .gitignore

* fix: fix github search integration

A few attributes were missing when calling the .add method: data_type and loader.

Also, update the query search according to the EmbedChain documentation, the query must include the type and repo keys

* fix: rollback YoutubeChannel paramenter

* chore: fix type hinting for CodeDocs search

* fix: ensure proper configuration when call `add`

According to the documentation, some search methods must be defined as either a loader or a data_type. This commit ensures that.

* build: add optional-dependencies for github and xml search

* test: mocking external requests from search_tool tests

* build: add pytest-recording as devDependencie

src/crewai_tools/tools/rag/rag_tool.py

@@ -59,11 +59,5 @@ class RagTool(BaseTool):
     def _run(
         self,
         query: str,
-        **kwargs: Any,
-    ) -> Any:
-        self._before_run(query, **kwargs)
-
+    ) -> str:
         return f"Relevant Content:\n{self.adapter.query(query)}"
-
-    def _before_run(self, query, **kwargs):
-        pass