fix: resolve Python 3.8 compatibility issue with tuple type annotation

- Change `tuple[List[Agent], List[Task]]` to `Tuple[List[Agent], List[Task]]` in autoagents.py:258
- Add `Tuple` import to typing imports
- Add `requires-python = ">=3.8"` to pyproject.toml

Fixes #388

Co-authored-by: MervinPraison <MervinPraison@users.noreply.github.com>

Author: claude[bot]

src/praisonai-agents/praisonaiagents/agents/autoagents.py

@@ -8,7 +8,7 @@
 from .agents import PraisonAIAgents
 from ..agent.agent import Agent
 from ..task.task import Task
-from typing import List, Any, Optional, Dict
+from typing import List, Any, Optional, Dict, Tuple
 import logging
 import os
 from pydantic import BaseModel
@@ -255,7 +255,7 @@ def _generate_config(self) -> AutoAgentsConfig:
             logging.error(f"Error generating configuration: {e}")
             raise
 
-    def _create_agents_and_tasks(self, config: AutoAgentsConfig) -> tuple[List[Agent], List[Task]]:
+    def _create_agents_and_tasks(self, config: AutoAgentsConfig) -> Tuple[List[Agent], List[Task]]:
         """Create agents and tasks from configuration"""
         agents = []
         tasks = []

src/praisonai-agents/pyproject.toml

@@ -6,6 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "praisonaiagents"
 version = "0.0.89"
 description = "Praison AI agents for completing complex tasks with Self Reflection Agents"
+requires-python = ">=3.8"
 authors = [
     { name="Mervin Praison" }
 ]