Add workflow_button block element to the Block Kit models

Author: seratch

json-logs/samples/api/chat.postMessage.json

@@ -61,6 +61,17 @@
               "style": ""
             },
             "accessibility_label": "",
+            "workflow": {
+              "trigger": {
+                "url": "",
+                "customizable_input_parameters": [
+                  {
+                    "name": "",
+                    "value": ""
+                  }
+                ]
+              }
+            },
             "options": [
               {
                 "text": {
@@ -314,7 +325,8 @@
         "source": "",
         "file_id": "",
         "file": {
-          "thumb_gif": "",
+          "created": 123,
+          "timestamp": 123,
           "id": "",
           "created": 123,
           "timestamp": 123,
@@ -589,6 +601,28 @@
                   },
                   "accessibility_label": ""
                 },
+                {
+                  "type": "workflow_button",
+                  "action_id": "",
+                  "text": {
+                    "type": "plain_text",
+                    "text": "",
+                    "emoji": false
+                  },
+                  "workflow": {
+                    "trigger": {
+                      "url": "",
+                      "customizable_input_parameters": [
+                        {
+                          "name": "",
+                          "value": ""
+                        }
+                      ]
+                    }
+                  },
+                  "style": "",
+                  "accessibility_label": ""
+                },
                 {
                   "type": "checkboxes",
                   "action_id": "",
@@ -2917,6 +2951,49 @@
                 "accessibility_label": ""
               }
             },
+            {
+              "type": "section",
+              "text": {
+                "type": "plain_text",
+                "text": "",
+                "emoji": false
+              },
+              "block_id": "",
+              "fields": [
+                {
+                  "type": "plain_text",
+                  "text": "",
+                  "emoji": false
+                },
+                {
+                  "type": "mrkdwn",
+                  "text": "",
+                  "verbatim": false
+                }
+              ],
+              "accessory": {
+                "type": "workflow_button",
+                "action_id": "",
+                "text": {
+                  "type": "plain_text",
+                  "text": "",
+                  "emoji": false
+                },
+                "workflow": {
+                  "trigger": {
+                    "url": "",
+                    "customizable_input_parameters": [
+                      {
+                        "name": "",
+                        "value": ""
+                      }
+                    ]
+                  }
+                },
+                "style": "",
+                "accessibility_label": ""
+              }
+            },
             {
               "type": "section",
               "text": {
@@ -4162,6 +4239,17 @@
             "style": ""
           },
           "accessibility_label": "",
+          "workflow": {
+            "trigger": {
+              "url": "",
+              "customizable_input_parameters": [
+                {
+                  "name": "",
+                  "value": ""
+                }
+              ]
+            }
+          },
           "options": [
             {
               "text": {
@@ -4313,6 +4401,17 @@
             "style": ""
           },
           "accessibility_label": "",
+          "workflow": {
+            "trigger": {
+              "url": "",
+              "customizable_input_parameters": [
+                {
+                  "name": "",
+                  "value": ""
+                }
+              ]
+            }
+          },
           "options": [
             {
               "text": {