Support array of events for rule conditions

[mavarazy]

We currently trigger a single event per rule, we need to support arrays of events to allow complicated triggers on the same condition.

For example, if we want to remove a field and change class name for the field under the same condition, currently we would need to do following:

[{
    {
      conditions: {
        firstName: "empty",
      },
      event: {
        type: "remove",
        params: { field: "email" }, 
     },
    },
   {
      conditions: {
        firstName: "empty",
      },
      event: {
        type: "uiAppend",
        params: { lastName: { classNames: "danger" } },       
     },
    }
}]

While what we want to do is this:

{
    conditions: {
      firstName: "empty",
    },
    event: [{
      type: "remove",
      params: { field: "email" },
    }, {
      type: "uiAppend",
      params: { lastName: { classNames: "danger" } },
    }]
  }