Vector memory revamp (part 1: refactoring) (#4208)

Additional changes:

* Improve typing

* Modularize message history memory & fix/refactor lots of things

* Fix summarization

* Move memory relevance calculation to MemoryItem & improve test

* Fix import warnings in web_selenium.py

* Remove `memory_add` ghost command

* Implement overlap in `split_text`

* Move memory tests into subdirectory

* Remove deprecated `get_ada_embedding()` and helpers

* Fix used token calculation in `chat_with_ai`

* Replace Message TypedDict by dataclass

* Fix AgentManager singleton issues in tests

---------

Co-authored-by: Auto-GPT-Bot <github-bot@agpt.co>

tests/test_agent.py

@@ -3,17 +3,16 @@ from unittest.mock import MagicMock
 import pytest
 
 from autogpt.agent import Agent
-from autogpt.config import Config
+from autogpt.config import AIConfig
 
 
 @pytest.fixture
 def agent():
     ai_name = "Test AI"
     memory = MagicMock()
-    full_message_history = []
     next_action_count = 0
     command_registry = MagicMock()
-    config = Config()
+    config = AIConfig()
     system_prompt = "System prompt"
     triggering_prompt = "Triggering prompt"
     workspace_directory = "workspace_directory"
@@ -21,7 +20,6 @@ def agent():
     agent = Agent(
         ai_name,
         memory,
-        full_message_history,
         next_action_count,
         command_registry,
         config,
@@ -32,10 +30,10 @@ def agent():
     return agent
 
 
-def test_agent_initialization(agent):
+def test_agent_initialization(agent: Agent):
     assert agent.ai_name == "Test AI"
     assert agent.memory == agent.memory
-    assert agent.full_message_history == []
+    assert agent.history.messages == []
     assert agent.next_action_count == 0
     assert agent.command_registry == agent.command_registry
     assert agent.config == agent.config