💡 [major] Prefer MSGPack over JSON

[christianblais]

Cachette cached values aren't meant to be human readable. This lib is meant to be fast. Therefore, I believe we can achieve a little bit more speed by avoiding JSON serialization, and instead use more performant algorithms, such as msgpack. With this PR, I'm replacing JSON with msgpacker. We would incur a small hit on writes, but gain interesting wins on reads.

5000 writes;

Platform info:
==============
   Darwin 23.3.0 arm64
   Node.JS: 18.20.4
   V8: 10.2.154.26-node.37
   CPU: Apple M2 × 8
   Memory: 16 GB

Suite: serialize
================

✔ msgpack       126,894 ops/sec
✔ json          131,671 ops/sec

   msgpack        -3.63%    (126,894 ops/sec)   (avg: 7μs)
   json (#)           0%    (131,671 ops/sec)   (avg: 7μs)

┌─────────┬────────────────────────────────────────────────────┐
│ msgpack │ ████████████████████████████████████████████████   │
├─────────┼────────────────────────────────────────────────────┤
│ json    │ ██████████████████████████████████████████████████ │
└─────────┴────────────────────────────────────────────────────┘

5000 reads;

Platform info:
==============
   Darwin 23.3.0 arm64
   Node.JS: 18.20.4
   V8: 10.2.154.26-node.37
   CPU: Apple M2 × 8
   Memory: 16 GB

Suite: parse
================

✔ msgpack        82,745 ops/sec
✔ json           59,111 ops/sec

   msgpack       +39.98%     (82,745 ops/sec)   (avg: 12μs)
   json (#)           0%     (59,111 ops/sec)   (avg: 16μs)

┌─────────┬────────────────────────────────────────────────────┐
│ msgpack │ ██████████████████████████████████████████████████ │
├─────────┼────────────────────────────────────────────────────┤
│ json    │ ████████████████████████████████████               │
└─────────┴────────────────────────────────────────────────────┘

Given cachette is all about optimizing reads, I believe this to be a good trade-off. Here, assuming a 5:1 read:write ratio, we see a 34% overall gain.

1000 reads, 5000 writes

Platform info:
==============
   Darwin 23.3.0 arm64
   Node.JS: 18.20.4
   V8: 10.2.154.26-node.37
   CPU: Apple M2 × 8
   Memory: 16 GB

Suite: serialize
================

✔ msgpack        24,490 ops/sec
✔ json           18,211 ops/sec

   msgpack       +34.48%     (24,490 ops/sec)   (avg: 40μs)
   json (#)           0%     (18,211 ops/sec)   (avg: 54μs)

┌─────────┬────────────────────────────────────────────────────┐
│ msgpack │ ██████████████████████████████████████████████████ │
├─────────┼────────────────────────────────────────────────────┤
│ json    │ █████████████████████████████████████              │
└─────────┴────────────────────────────────────────────────────┘

Note: Careful, as this PR is not revertable. Values set as buffer depends on the code present in this PR to be deserialized.