Remove contract 2 + Code Split

[forgetso]

• removes most of the functions in the contract package and move to a new package called keyring
• adds dynamic imports in a load of places for better code splitting
• removes the canvas stuff from the account generator

New Bundle

dist/bundle/procaptcha.bundle.js            0.12 kB │ gzip:   0.12 kB
dist/bundle/asU8a-t99hafrf.js               0.17 kB │ gzip:   0.16 kB
dist/bundle/spread-DEmVz7RJ.js              0.28 kB │ gzip:   0.19 kB
dist/bundle/Signer-DP9drQ55.js              0.33 kB │ gzip:   0.18 kB
dist/bundle/index-QVME9Prx.js               1.44 kB │ gzip:   0.71 kB
dist/bundle/index-DN4Tp-kg.js               2.13 kB │ gzip:   0.90 kB
dist/bundle/sha256-Dm0BaA-M.js              5.02 kB │ gzip:   2.13 kB
dist/bundle/ProcaptchaWidget-RaP21-vz.js    6.14 kB │ gzip:   2.33 kB
dist/bundle/Checkbox-Be1FZQiE.js           20.97 kB │ gzip:   6.53 kB
dist/bundle/ProcaptchaWidget-DdESN6E2.js   23.10 kB │ gzip:   7.31 kB
dist/bundle/bip39-tMDHmkGA.js              23.38 kB │ gzip:  11.11 kB
dist/bundle/fp.esm-DIqXhnRe.js             48.48 kB │ gzip:  16.72 kB
dist/bundle/index-d40l5s4z.js              68.46 kB │ gzip:  28.19 kB
dist/bundle/index-DFV7ZmZI.js             232.38 kB │ gzip:  62.74 kB
dist/bundle/hash-DLJ3jCRq.js              260.68 kB │ gzip: 182.21 kB
dist/bundle/index-BXmNlL-m.js             597.12 kB │ gzip: 156.32 kB

Old Bundle

dist/bundle/procaptcha.bundle.js                                              0.12 kB │ gzip:   0.12 kB
dist/bundle/ProcaptchaWidget-C2pXE0yN.js                                      6.04 kB │ gzip:   2.30 kB
dist/bundle/ProcaptchaWidget-CfFn3hbN.js                                     22.92 kB │ gzip:   7.26 kB
dist/bundle/Checkbox-CQpUvSn8.js                                             22.94 kB │ gzip:   7.30 kB
dist/bundle/index-CQh9ivYn.js                                             1,245.09 kB │ gzip: 458.99 kB

[goastler]

removes the canvas stuff from the account generator

isn't this needed?