Support Well Known Types

[hectorcast-db]

Changes

Support Well Known Types parameters in CLI

NOTE: Description changes in the generated code are unrelated. There have been changes on how genkit constructs the descriptions.

Why

Well Known Types have a special format when marshalled. This PR allows users to express Timestamp, Duration and FieldMasks as a string (their wire format) and converts them into the format which the SDK expects.

Tests

Since there are no existing fields, I manually modified the spec to add extra fields in an existing class. I also updated the type of the existing UpdateMask from string to an actual google.protobuf.FieldMask

fc096b3#r159677779

 {
          "in": "query",
          "name": "start_date",
          "schema": {
            "type": "string",
            "x-databricks-api-version": "legacy",
            "x-databricks-well-known-type": "google.protobuf.Timestamp"
          },
          "x-databricks-api-version": "legacy"
        },
        {
          "in": "query",
          "name": "duration",
          "schema": {
            "type": "string",
            "x-databricks-api-version": "legacy",
            "x-databricks-well-known-type": "google.protobuf.Duration"
          },
          "x-databricks-api-version": "legacy"
        },
       
          {
            "in": "query",
            "name": "required_start_date",
            "required": true,
            "schema": {
              "type": "string",
              "x-databricks-api-version": "legacy",
              "x-databricks-well-known-type": "google.protobuf.Timestamp"
            },
            "x-databricks-api-version": "legacy"
          },
          {
            "in": "query",
            "name": "required_duration",
            "required": true,
            "schema": {
              "type": "string",
              "x-databricks-api-version": "legacy",
              "x-databricks-well-known-type": "google.protobuf.Duration"
            },
            "x-databricks-api-version": "legacy"
          }

[hectorcast-db]

Description changes are unrelated. There have been changes on how genkit constructs the descriptions.