Add page for myUplink (#25920)

* Added page for myUplink

* Updated with suggestions

* Update source/_integrations/myuplink.markdown

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

* Update source/_integrations/myuplink.markdown

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

* Update text

---------

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

source/_integrations/myuplink.markdown

@@ -0,0 +1,44 @@
+---
+title: myUplink
+description: Instructions on how to set up the myUplink integration within Home Assistant.
+ha_category:
+  - Sensor
+ha_iot_class: Cloud Polling
+ha_release: '2024.2'
+ha_domain: myuplink
+ha_codeowners:
+  - '@pajzo'
+ha_config_flow: true
+ha_integration_type: integration
+---
+
+The myUplink integration lets you get information about the devices supporting myUplink using the [official cloud API](https://dev.myuplink.com).
+
+Depending on the type of devices in your system, one or more sensor entities to Home Assistant. Currently, there is only support for reading sensor states.
+
+## Prerequisites
+
+1. Visit [https://myuplink.com/register](https://myuplink.com/register) and sign up for a user account.
+2. Go to [**Applications**](https://dev.myuplink.com/apps), and register a new App:
+
+- **Application ID**: Home Assistant (or whatever name makes sense to you)
+- **OAuth Flow**: Authorization Code Grant Flow
+- **Redirect URI**: `https://my.home-assistant.io/redirect/oauth`
+
+
+{% details "I have manually disabled My Home Assistant" %}
+
+If you don't have [My Home Assistant](/integrations/my) on your installation,
+you can use `<HOME_ASSISTANT_URL>/auth/external/callback` as the redirect URI
+instead.
+
+The `<HOME_ASSISTANT_URL>` must be the same as used during the configuration/
+authentication process.
+
+Internal examples: `http://192.168.0.2:8123/auth/external/callback`, `http://homeassistant.local:8123/auth/external/callback`." 
+
+{% enddetails %}
+
+{% include integrations/config_flow.md %}
+
+The integration configuration will require the **Client ID** and **Client Secret** created above. See [Application Credentials](/integrations/application_credentials) for more details.