refactor(crypto): remove long dependency

[faustbrian]

The long@3 dependency can cause problems if people also have long@4 installed because node.js will think it should use long@4 even though we don't have it as a dependency. This will cause the value instanceof Long check in the bytebuffer dependency to fail because its own dependency is long@3 but node.js will force it to use long@4 if it is installed, which will throw an exception because the instance signatures will differ.

The bytebuffer types have been removed because they don't reflect their JavaScript code. The types state that you can only pass in a number or Long but their code will actually perform assertions and use Long internally to create an instance. This means that whatever long version is installed will be used.

ByteBufferPrototype.writeUint64 = function(value, offset) {
    var relative = typeof offset === 'undefined';
    if (relative) offset = this.offset;
    if (!this.noAssert) {
        if (typeof value === 'number')
            value = Long.fromNumber(value);
        else if (typeof value === 'string')
            value = Long.fromString(value);
        else if (!(value && value instanceof Long))
            throw TypeError("Illegal value: "+value+" (not an integer or Long)");
        if (typeof offset !== 'number' || offset % 1 !== 0)
            throw TypeError("Illegal offset: "+offset+" (not an integer)");
        offset >>>= 0;
        if (offset < 0 || offset + 0 > this.buffer.length)
            throw RangeError("Illegal offset: 0 <= "+offset+" (+"+0+") <= "+this.buffer.length);
    }
    if (typeof value === 'number')
        value = Long.fromNumber(value);
    else if (typeof value === 'string')
        value = Long.fromString(value);

[codecov]

Codecov Report

Merging #3502 into 2.6 will increase coverage by <.01%.
The diff coverage is 88.88%.

@@            Coverage Diff             @@
##              2.6    #3502      +/-   ##
==========================================
+ Coverage   66.13%   66.14%   +<.01%     
==========================================
  Files         439      439              
  Lines       12460    12464       +4     
  Branches     1711     1711              
==========================================
+ Hits         8241     8244       +3     
- Misses       4185     4186       +1     
  Partials       34       34

Impacted Files	Coverage Δ
packages/crypto/src/transactions/types/schemas.ts	100% <100%> (ø)	⬆️
packages/crypto/src/transactions/registry.ts	71.05% <100%> (+0.78%)	⬆️
.../core-transactions/src/handlers/multi-signature.ts	68.62% <80%> (ø)	⬆️
packages/core-transaction-pool/src/storage.ts	97.5% <0%> (-2.5%)	⬇️

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