Bincode 2 compatibility

[0x241F31]

https://github.com/bincode-org/bincode/blob/trunk/docs/migration_guide.md
Seems like new binary format is different, therefore runtimes should be updated

[0x241F31]

So, new bincode standard only different in integers encoding, now it uses variable-length approach.

I implemented new standard in JavaScript:
https://github.com/MrFoxPro/serde-ts/blob/master/runtime/bincode_v2.ts

Unfortunately, it turned out way slower in JS, probably due BigInts