Typings for protobuf.js, bytebuffer.js, long.js

[MeirionHughes]

https://github.com/dcodeIO/ProtoBuf.js/ https://github.com/dcodeIO/ByteBuffer.js/ https://github.com/dcodeIO/Long.js/

protobuf.js depends on bytebuffer.js bytebuffer.js depends on long.js

[MeirionHughes]

typings for these are currently on dt, but there are a few issues with them; like duplicate definition or Long (in bytebuffer) and incorrect use of ByteBuffer (has a smaller mock) in ProtoBuf. Plus the module export is simply wrong in ByteBuffer (exports namespace rather than class which doesn't transpile to an module dependency).

I have fixed these locally, but don't want to change them on dt (presumably they work for someone). Would you accept PR of my local fixes to add these typings to this registry?

[unional]

Of course!