feat: support docker container mem_limit/cpu_shares configable

[qxo]

• 模型容器的MEM/CPU限制可通过实例节点环境变量GPUSTACK_RUNTIME_DEPLOY_DEFAULT_MEM/GPUSTACK_RUNTIME_DEPLOY_DEFAULT_CPU 或模型编辑界面环境变量ENV_MEN/ENV_CPU来配置

• pause 容器默认限制MEM/CPU, 同时也通过worker环境变量来配置GPUSTACK_RUNTIME_DEPLOY_PAUSE_MEM/GPUSTACK_RUNTIME_DEPLOY_PAUSE_CPU_SHARES

• 为防止内存过度分配，指mem_limit时默认不指mem_reservation=mem_limit，需要可单独设置mem_reservation

• TODO 以上常量命名怎么更有意义有商榷

[thxCode]

please make above changes on gpustack/gpustack, runtime already provided a configuration entrence here:

runtime/gpustack_runtime/deployer/__types__.py

Lines 232 to 244 in c1c6ac1

	@dataclass_json
	@dataclass
	class ContainerResources(dict[str, float | int | str]):
	"""
	Resources for a container.
	Attributes:
	cpu (float | None):
	CPU limit for the container in cores.
	memory (str | int | float | None):
	Memory limit for the container.
	"""

.