Replace all usage of ziplist with listpack for t_hash (#8887)

Part one of implementing #8702 (taking hashes first before other types)

## Description of the feature
1. Change ziplist encoded hash objects to listpack encoding.
2. Convert existing ziplists on RDB loading time. an O(n) operation.

## Rdb format changes
1. Add RDB_TYPE_HASH_LISTPACK rdb type.
2. Bump RDB_VERSION to 10

## Interface changes
1. New `hash-max-listpack-entries` config is an alias for `hash-max-ziplist-entries` (same with `hash-max-listpack-value`)
2. OBJECT ENCODING will return `listpack` instead of `ziplist`

## Listpack improvements:
1. Support direct insert, replace integer element (rather than convert back and forth from string)
3. Add more listpack capabilities to match the ziplist ones (like `lpFind`, `lpRandomPairs` and such)
4. Optimize element length fetching, avoid multiple calculations
5. Use inline to avoid function call overhead.

## Tests
1. Add a new test to the RDB load time conversion
2. Adding the listpack unit tests. (based on the one in ziplist.c)
3. Add a few "corrupt payload: fuzzer findings" tests, and slightly modify existing ones.

Co-authored-by: Oran Agra <oran@redislabs.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/defrag.c b/src/defrag.c
index 5d18c9079..c804af370 100644
--- a/src/defrag.c
+++ b/src/defrag.c
@@ -864,7 +864,7 @@ long defragKey(redisDb *db, dictEntry *de) {
             serverPanic("Unknown sorted set encoding");
         }
     } else if (ob->type == OBJ_HASH) {
-        if (ob->encoding == OBJ_ENCODING_ZIPLIST) {
+        if (ob->encoding == OBJ_ENCODING_LISTPACK) {
             if ((newzl = activeDefragAlloc(ob->ptr)))
                 defragged++, ob->ptr = newzl;
         } else if (ob->encoding == OBJ_ENCODING_HT) {