Document VERSION() and DS_VERSION() in N1QL Miscellaneous Utility Functions

We should document the following 2 N1QL Miscellaneous Utility Functions in our documentation here

• VERSION() — returns SQL++ version

Example:

SELECT VERSION() as language_version;

Output:

[

  {

    "language_version": "7.1.1-N1QL"

  }

]

* DS_VERSION() – returns the Couchbase Server version

Example:

SELECT DS_VERSION() as server_version;

Output:

[

  {

    "server_version": "7.1.1-3175-enterprise"

  }

]