Add chess puzzle solving environment, tools, and rewards #112

Job	Run time
test-envs (3.10, agentfly/tests/unit/tools/test_code_tool.py)	7m 14s
test-envs (3.10, agentfly/tests/unit/rewards/ --ignore agentfly/tests/unit/rewards/test_env_id.py...	7m 14s
test-envs (3.10, agentfly/tests/unit/envs/ --ignore agentfly/tests/unit/envs/test_webshop_text_en...	7m 11s
test-envs (3.10, agentfly/tests/unit/tools/ --ignore agentfly/tests/unit/tools/test_webshop_tool....	7m 10s
test-envs (3.10, agentfly/tests/unit/tools/test_scienceworld_tool.py)	6m 59s
test-envs (3.10, agentfly/tests/unit/envs/test_alfworld_env.py)	7m 5s
	42m 53s

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