Consider migrate the cache system to hls-graph

[soulomoon]

Instead of scattering the cache system between hls-graph and ghcide. There might be a better idea, we can migrate the cache system to hls-graph. Since the scattering leads to some hard debugging bugs like #4185 #4093, although they've been solved.

But it is hard, It would require us to make a very good abstract of the current handling logic. And reimplement the following in hls-graph:

• garbage collector is in ghcide. There are special treatment for special keys.
• We have two fields in shakeExtra that's in the cache system. dirtykeys and state. And monitering is happening in ghcide.
• data Value v that wrap FileVersion and PositionDelta.
• specially treatment of special keys in estimateFileVersionUnsafely
• lastValueIO and it is entangling with PositionMapping

But we can take steps to do it too.

• The dirtiness keeping for instance is relatively easier target. see more at Stabilize the build system by correctly house keeping the dirtykeys and rule values [flaky test #4185 #4093] #4190 (comment)