Describe of feature

Redis supports inserting data over 4GB into string (and recently for lists too, see #9357), But LZF compression used in RDB files (see rdbcompression config), and in quicklist (see list-compress-depth config) does not support compress/decompress data over UINT32_MAX, which will result in corrupting the rdb after compression.

Internal changes

1. Modify the unsigned int parameter of lzf_compress/lzf_decompress to size_t.
2. Modify the variable types in lzf_compress involving offsets and lengths to size_t.
3. Set LZF_USE_OFFSETS to 0.
   When LZF_USE_OFFSETS is 1, lzf store offset into LZF_HSLOT(32bit).
   Even in 64-bit, LZF_USE_OFFSETS defaults to 1, because lzf assumes that it only compresses and decompresses data smaller than UINT32_MAX.
   But now we need to make lzf support 64-bit, turning on LZF_USE_OFFSETS will make it impossible to store 64-bit
   offsets or pointers.
   BTW, disable LZF_USE_OFFSETS also brings a few performance improvements.

Test

4. Add test for compress/decompress string large than UINT32_MAX.
5. Add unittest for compress/decompress quicklistNode.

Implements #9732.