GlobalDecoderRegistry, better handling with fields with 'accepted_interface' option

[Zetazzz]

Added interfaces.useGlobalDecoderRegistry
enables GlobalDecoderRegistry and related functions. Highly recommended to enable when dealing with fields with 'accepted_interface' option.

Changes included:

Build without error.

is method, to test if an object or json implements the interface:

export const SendAuthorization = {
  typeUrl: "/cosmos.bank.v1beta1.SendAuthorization",
  is(o: any): o is SendAuthorization {
    return o && (o.$typeUrl === SendAuthorization.typeUrl || Array.isArray(o.spendLimit) && (!o.spendLimit.length || Coin.is(o.spendLimit[0])));
  },
  isSDK(o: any): o is SendAuthorizationSDKType {
    return o && (o.$typeUrl === SendAuthorization.typeUrl || Array.isArray(o.spend_limit) && (!o.spend_limit.length || Coin.isSDK(o.spend_limit[0])));
  },
...
}

GlobalDecoderRegistry, all codecs are registered here:

import { GlobalDecoderRegistry } from "./registry";

// get a codec by a typeUrl as a key
GlobalDecoderRegistry.getDecoder(key)
// or get a codec by an instance, it'll get by using $typeUrl field or the pattern of fields.
GlobalDecoderRegistry.getDecoderByInstance(obj)

Better handling polymorphic fields, samples:

decode(…): Grant {
        …
        case 1:
          // will also decode accepted types(e.g. GenericAuthorization | DepositDeploymentAuthorization | SendAuthorization) from Any
          message.authorization = GlobalDecoderRegistry.unwrapAny(reader);
}

  fromJSON(object: any): Grant {
    const obj = createBaseGrant();
    // auto detect right codec for object.authorization, and then get object from json.
    if (isSet(object.authorization)) obj.authorization = GlobalDecoderRegistry.fromJSON(object.authorization);
    return obj;
  },

Please see 'packages/telescope/tests/impl-interfaces.test.ts' for more detailed usage.