feat: refactor local task cache to LRU implement.

[IRONICBo]

golang-lru seems to have implemented some concurrency-safe caching policies that can replace our local existing implementation logic internal/core/task.go to support better cache management.

For now it's enough to only consider standalone cache management, I've also given some bench processing in test, and also need to consider a performance comparison between the two implementations.

If there is a better solution you can comment below

Reference: https://github.com/hashicorp/golang-lru

[IRONICBo]

/assign @huangsihao7 @IRONICBo