Add serialized_space support to Genie tools for export/import/clone

[CheeYuTan]

Summary

• Adds serialized_space support to Genie MCP tools, enabling export/import/clone of Genie spaces with their full configuration (settings, instructions, sample questions)
• get_genie: new include_serialized_space parameter to export full space config
• create_or_update_genie: new serialized_space parameter to import config during creation/update
• New clone_genie MCP tool for one-step space cloning across environments
• Core library (AgentBricksManager) updated to pass serialized_space through the /api/2.0/data-rooms REST API

Fixes #83

Test proof

Tested against live workspace (e2-demo-field-eng):

TEST 1 - Get without include_serialized_space:
  Status: 200
  Has serialized_space: False
  Keys: ['id', 'space_id', 'display_name', 'description', 'warehouse_id', ...]

TEST 2 - Get with include_serialized_space=true:
  Status: 200
  Has serialized_space: True
  serialized_space length: 11894 chars
  serialized_space preview: {"version": 2, "config": {"sample_questions": [...]}}

TEST 3 - Core library genie_get with include_serialized_space:
  Has serialized_space: True
  serialized_space length: 11894 chars
  PASS

Test	Result
REST API include_serialized_space=true returns config	PASS
REST API without param omits serialized_space	PASS
Core library genie_get(include_serialized_space=True) works	PASS
genie_create signature accepts serialized_space param	PASS
genie_update signature accepts serialized_space param	PASS
MCP get_genie passes through to core library	PASS
MCP create_or_update_genie passes through to core library	PASS
New clone_genie tool composes export + create	PASS