Persist available tools from a Tool repository (#2851)

* feat: add capability to see and expose public Tool classes

* feat: persist available Tools from repository on publish

* ci: ignore explictly templates from ruff check

Ruff only applies --exclude to files it discovers itself. So we have to skip manually the same files excluded from `ruff.toml`

* sytle: fix linter issues

* refactor: renaming available_tools_classes by available_exports

* feat: provide more context about exportable tools

* feat: allow to install a Tool from pypi

* test: fix tests

* feat: add env_vars attribute to BaseTool

* remove TODO: security check since we are handle that on enterprise side

src/crewai/tools/__init__.py

@@ -1 +1,7 @@
-from .base_tool import BaseTool, tool
+from .base_tool import BaseTool, tool, EnvVar
+
+__all__ = [
+    "BaseTool",
+    "tool",
+    "EnvVar",
+]