This is a subtask of issue: https://github.com/tikv/tikv/issues/5743

> Read blob from file with dictionary compression

Mainly made following changes:

- Refactored `BlobDecoder`, add decompression related components in it.
- Refactored `BlobFileReader` and `BlobFileIterator`, initialize the decoder with corresponding data in blob files.
- add testcases

Issue Number: https://github.com/tikv/tikv/issues/8635