Problem: released binary don't contain needed dynamic libraries

[yihuang]

After integrating cosmwasm, the chain-maind binary will require the libwsamvm.[so|dylib] to run, it would be good to include the dynamic libraries inside the released bundle.

Solution:

• Adopt the nix bundle solution used in cronos

• [x] #793 linux, x86-64 mac

• [ ] TODO arm mac

• [ ] TODO windows

[tomtau]

will also need to bundle the Windows DLL

[devashishdxt]

We don't need this anymore. Closing.