docs: Add Push.ai (#7742)

Author: igorlukanin

docs/pages/product/configuration/visualization-tools.mdx

@@ -52,6 +52,11 @@ page, please [file an issue](https://github.com/cube-js/cube/issues) on GitHub.
     imageUrl="https://static.cube.dev/icons/steep-light.svg"
     title="Steep"
   />
+  <GridItem
+    url="visualization-tools/push-ai"
+    imageUrl="https://static.cube.dev/icons/push-ai-light.svg"
+    title="Push.ai"
+  />
 </Grid>
 
 You can learn more about SQL API on the

docs/pages/product/configuration/visualization-tools/_meta.js

@@ -11,6 +11,7 @@ module.exports = {
   "metabase": "Metabase",
   "observable": "Observable",
   "powerbi": "Power BI",
+  "push-ai": "Push AI",
   "retool": "Retool",
   "steep": "Steep",
   "streamlit": "Streamlit",

docs/pages/product/configuration/visualization-tools/push-ai.mdx

@@ -0,0 +1,46 @@
+# Push.ai
+
+[Push.ai](https://push.ai) is a business observability tool that helps teams
+share metrics and other data insights in messaging tools, like Slack.
+
+<Screenshot src="https://ucarecdn.com/b7f2f073-fd77-4de3-a40f-ee7e3690b535/"/>
+
+<InfoBox>
+
+Watch how Cube and Push.ai work together in this webinar recording:
+[Unlock Proactive Intelligence Using Cube + Push.ai](https://cube.dev/events/unlock-proactive-intelligence-using-cube-push-ai).
+
+</InfoBox>
+
+## REST API
+
+You can use the [REST API][ref-rest-api] to connect Cube to Push.ai.
+
+### Cube Cloud
+
+When you have set up your Cube project in Cube Cloud, you need **REST API
+endpoint** and **API Secret** for your setup in order to connect Steep to
+Cube. Log in to your Cube console and follow the steps below.
+
+**REST API endpoint** can be found on the&nbsp;<Btn>Overview</Btn> page:
+
+<Screenshot src="https://ucarecdn.com/fddce1b2-fbdd-4711-82d9-3967af0e2641/"/>
+
+**API Secret** can be found on the&nbsp;<Btn>Settings → Configuration</Btn>
+page under&nbsp;<Btn>Environment variables</Btn> where it’s named
+`CUBEJS_API_SECRET`:
+
+<Screenshot src="https://ucarecdn.com/d978e95b-9e9c-443e-8b85-3106352a74cb/"/>
+
+### Connection in Push.ai
+
+Copy **REST API endpoint** and **API Secret** you got from Cube Cloud and
+paste them into Push.ai form for creating the Cube data source:
+
+<Screenshot src="https://ucarecdn.com/06a814c2-25df-42d4-8b24-406292b50ac3/"/>
+
+## Defining metrics
+
+After connecting to Cube, measures and dimensions need to be converted into
+metrics. See [Push.ai documention](https://docs.push.ai/semantic-layer-integrations/cube#usage-notes)
+for guidance.