Add command to register authorizers

[boddumanohar]

A brief description of the changes in this PR:

fixes: 0chain/0chain#1602

./zwallet auth-register \
--url http://dev.0chain.net:32302 \
--client_key 347efa09e2156aa8ddb4a0a581cb8e6fed0d6b9c9c8d38d2f1fdd119069a3512de33665d17ed8e742497615e3f7c9ab5f0de747884e14836ac9496ce12299f81 \
--client_id 4a53cfa74eb600e973d28af1eedc9213bc3a4e9f3af4fd289bd441f642fb540a

the added authoriser URL can be checked by running

./zwallet bridge-list-auth

[
  {
    "id": "2f945f7310689f17afd8c8cb291e1e3ba21677243aa1d404a2293064e7983d60",
    "url": "http://dev.0chain.net:32301"
  },
  {
    "id": "4a53cfa74eb600e973d28af1eedc9213bc3a4e9f3af4fd289bd441f642fb540a",
    "url": "http://dev.0chain.net:32302"
  }
]

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• blobber:
• gosdk:
• system_test:
• zboxcli:
• 0chain:
• Other: ...

[boddumanohar]

Currently blocked by moving smartcontractinterface/interface.go#L34 to common. Will continue working once the interface is moved to common

[dabasov]

lgtm

[service-0chain]

Manual system tests [failure] with the following config

config	value
tests skipped	FALSE
system-tests	master
gosdk	NOT OVERRIDDEN
zboxcli	staging
zwalletcli	register-authorizers
0chain	staging
blobber	staging
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	staging
0proxy	staging
0search	staging

[service-0chain]

Manual system tests [success] with the following config

config	value
tests skipped	YES
system-tests	master
gosdk	NOT OVERRIDDEN
zboxcli	staging
zwalletcli	register-authorizers
0chain	staging
blobber	staging
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	staging
0proxy	staging
0search	staging

[dabasov]

lgtm