[Feature] remove implicit cache function in DDF

[Huandao0812]

Description and related tickets, documents

Add DDF api to cache, uncache a DDF. if a DDF is cached, it'll also be cached after an in-place transformation. new DDF will always be uncached.

Reviewers:

• Main reviewer: @ubolonton
• Optional reviewer: @lebinh @zkidkid
• Observers: @hai-adatao

  PR Progress

Make sure all checkboxes below are checked before merged

• [x] Merge check has no conflicts. PR checks passed.
• [x] Main reviewer approved
• [x] Optional reviewer approved

[Huandao0812]

@nhanitvn I changed summy and getFactorLevelCounts in this PR, please help review

[lebinh]

lgtm