Add setNodes() method

[dapplion]

Motivation

TransientVector from persistent-ts uses an optimization for faster setting of many nodes where each new node is only created once.

Description

Apply a similar strategy to the binary tree where with multiple gindexes and nodes each BranchNode is navigated and created at most once. Depending on the distribution of the array on gindexes this approach is either x2 faster or as fast as updating individually

    ✓ setNode loop depth 40 count 8 - contiguous                          118764.8 ops/s    8.420000 us/op        -      92889 runs   1.00 s
    ✓ setNodes depth 40 count 8 - contiguous                              232450.0 ops/s    4.302000 us/op        -     158404 runs   1.01 s
    ✓ setNode loop depth 40 count 8 - spread                              120380.4 ops/s    8.307000 us/op        -      98473 runs   1.01 s
    ✓ setNodes depth 40 count 8 - spread                                  132432.8 ops/s    7.551000 us/op        -     104445 runs   1.01 s
    ✓ setNode loop depth 40 count 32 - contiguous                         32047.17 ops/s    31.20400 us/op        -      26036 runs   1.00 s
    ✓ setNodes depth 40 count 32 - contiguous                             75585.79 ops/s    13.23000 us/op        -      48814 runs   1.00 s
    ✓ setNode loop depth 40 count 32 - spread                             27498.97 ops/s    36.36500 us/op        -      22871 runs   1.00 s
    ✓ setNodes depth 40 count 32 - spread                                 36836.48 ops/s    27.14700 us/op        -      28710 runs   1.00 s
    ✓ setNode loop depth 40 count 256 - contiguous                        3738.248 ops/s    267.5050 us/op        -       3146 runs   1.00 s
    ✓ setNodes depth 40 count 256 - contiguous                            10048.43 ops/s    99.51800 us/op        -       6658 runs   1.00 s
    ✓ setNode loop depth 40 count 256 - spread                            3236.675 ops/s    308.9590 us/op        -       2763 runs   1.00 s
    ✓ setNodes depth 40 count 256 - spread                                4283.077 ops/s    233.4770 us/op        -       3546 runs   1.00 s

Closes #49

[github-actions]

Performance Report

✔️ no performance regression detected

Full benchmark results

Benchmark suite	Current: ea2924d	Previous: 42b42e6	Ratio
hash 2 Uint8Array 2250026 times	3.1818 s/op	2.6847 s/op	1.19
hashTwoObjects 2250026 times	2.9813 s/op	2.5374 s/op	1.17
setRoot - gindexBitstring	11.182 ms/op	13.190 ms/op	0.85
setRoot - gindex	11.976 ms/op	13.406 ms/op	0.89
getRoot - gindexBitstring	13.381 ms/op	15.436 ms/op	0.87
getRoot - gindex	14.679 ms/op	14.224 ms/op	1.03
getHashObject - gindex	14.047 ms/op	13.944 ms/op	1.01
setHashObject - gindex	11.278 ms/op	13.121 ms/op	0.86
250k validators	3.2538 s/op	2.8874 s/op	1.13

by benchmarkbot/action

[dapplion]

@wemeetagain Would you mind taking over this PR?