feat: Add ToolCollection class for named tool access (#339)

This change allows accessing tools by name (tools["tool_name"]) in addition to
index (tools[0]), making it more intuitive and convenient to work with multiple
tools without needing to remember their position in the list

tests/adapters/mcp_adapter_test.py

@@ -0,0 +1,105 @@
+from textwrap import dedent
+
+import pytest
+from mcp import StdioServerParameters
+
+from crewai_tools import MCPServerAdapter
+from crewai_tools.adapters.tool_collection import ToolCollection
+
+@pytest.fixture
+def echo_server_script():
+    return dedent(
+        '''
+        from mcp.server.fastmcp import FastMCP
+
+        mcp = FastMCP("Echo Server")
+
+        @mcp.tool()
+        def echo_tool(text: str) -> str:
+            """Echo the input text"""
+            return f"Echo: {text}"
+
+        mcp.run()
+        '''
+    )
+
+
+@pytest.fixture
+def echo_server_sse_script():
+    return dedent(
+        '''
+        from mcp.server.fastmcp import FastMCP
+
+        mcp = FastMCP("Echo Server", host="127.0.0.1", port=8000)
+
+        @mcp.tool()
+        def echo_tool(text: str) -> str:
+            """Echo the input text"""
+            return f"Echo: {text}"
+
+        mcp.run("sse")
+        '''
+    )
+
+
+@pytest.fixture
+def echo_sse_server(echo_server_sse_script):
+    import subprocess
+    import time
+
+    # Start the SSE server process with its own process group
+    process = subprocess.Popen(
+        ["python", "-c", echo_server_sse_script],
+    )
+
+    # Give the server a moment to start up
+    time.sleep(1)
+
+    try:
+        yield {"url": "http://127.0.0.1:8000/sse"}
+    finally:
+        # Clean up the process when test is done
+        process.kill()
+        process.wait()
+
+
+def test_context_manager_syntax(echo_server_script):
+    serverparams = StdioServerParameters(
+        command="uv", args=["run", "python", "-c", echo_server_script]
+    )
+    with MCPServerAdapter(serverparams) as tools:
+        assert isinstance(tools, ToolCollection)
+        assert len(tools) == 1
+        assert tools[0].name == "echo_tool"
+        assert tools[0].run(text="hello") == "Echo: hello"
+
+def test_context_manager_syntax_sse(echo_sse_server):
+    sse_serverparams = echo_sse_server
+    with MCPServerAdapter(sse_serverparams) as tools:
+        assert len(tools) == 1
+        assert tools[0].name == "echo_tool"
+        assert tools[0].run(text="hello") == "Echo: hello"
+
+def test_try_finally_syntax(echo_server_script):
+    serverparams = StdioServerParameters(
+        command="uv", args=["run", "python", "-c", echo_server_script]
+    )
+    try:
+        mcp_server_adapter = MCPServerAdapter(serverparams)
+        tools = mcp_server_adapter.tools
+        assert len(tools) == 1
+        assert tools[0].name == "echo_tool"
+        assert tools[0].run(text="hello") == "Echo: hello"
+    finally:
+        mcp_server_adapter.stop()
+
+def test_try_finally_syntax_sse(echo_sse_server):
+    sse_serverparams = echo_sse_server
+    mcp_server_adapter = MCPServerAdapter(sse_serverparams)
+    try:
+        tools = mcp_server_adapter.tools
+        assert len(tools) == 1
+        assert tools[0].name == "echo_tool"
+        assert tools[0].run(text="hello") == "Echo: hello"
+    finally:
+        mcp_server_adapter.stop()