[View component] Added View node to DSS workflow

[jinyangrao]

1. Requirement Background
   Currently, the DSS workflow only supports SQL nodes as the upstream nodes of the Widget, and its nodes are not allowed to be shared, and at the same time, it depends on the logic of the CS table, which will cause frequent errors. Currently Visualis supports View as the upstream query result set of Widget. The View node functional logic can be integrated into the DSS workflow.
2. Back-end requirements
   The Visualis side needs to add some new interfaces to support the execution of the DSS workflow View node, and the DSS AppConn needs to add the addition, deletion, query, and modification operations of the View node.
3. Front-end requirements
   Add a View node.