add Azure Web App service doc

src/content/docs/azure/services/web-app.mdx

@@ -0,0 +1,168 @@
+---
+title: "Web App"
+description: Get started with Azure Web App on LocalStack
+template: doc
+---
+
+import AzureFeatureCoverage from "../../../../components/feature-coverage/AzureFeatureCoverage";
+
+## Introduction
+
+Azure Web App lets you deploy and run web applications without managing underlying infrastructure.
+It supports multiple runtimes, app configuration, and integration with App Service plans.
+Web App is useful for quickly building and testing hosted HTTP applications.
+
+LocalStack for Azure allows you to build and test Web App workflows in your local environment.
+The supported APIs are available on our [API Coverage section](#api-coverage), which provides information on the extent of Web App's integration with LocalStack.
+
+## Getting started
+
+This guide is designed for users new to Web App and assumes basic knowledge of the Azure CLI and our `azlocal` wrapper script.
+
+Start your LocalStack container using your preferred method.
+Then start CLI interception:
+
+```bash
+azlocal start_interception
+```
+
+### Create a resource group
+
+Create a resource group for your Web App resources:
+
+```bash
+az group create \
+  --name rg-web-demo \
+  --location westeurope
+```
+
+```bash title="Output"
+{
+  "name": "rg-web-demo",
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg-web-demo",
+  "location": "westeurope",
+  "properties": {
+    "provisioningState": "Succeeded"
+  },
+  ...
+}
+```
+
+### Create an App Service plan
+
+Create an App Service plan that will host the web app:
+
+```bash
+az appservice plan create \
+  --name asp-web-doc89 \
+  --resource-group rg-web-demo \
+  --location westeurope \
+  --sku F1
+```
+
+```bash title="Output"
+{
+  "name": "asp-web-doc89",
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg-web-demo/providers/Microsoft.Web/serverfarms/asp-web-doc89",
+  "location": "westeurope",
+  "provisioningState": "Succeeded",
+  "sku": {
+    "name": "B1",
+    "tier": "Basic",
+    ...
+  },
+  ...
+}
+```
+
+### Create and inspect a Web App
+
+Create a web app using a Python runtime:
+
+```bash
+az webapp create \
+  --name ls-web-doc89 \
+  --resource-group rg-web-demo \
+  --plan asp-web-doc89 \
+  --runtime "PYTHON:3.11"
+```
+
+```bash title="Output"
+{
+  "name": "ls-web-doc89",
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg-web-demo/providers/Microsoft.Web/sites/ls-web-doc89",
+  "type": "Microsoft.Web/sites",
+  "location": "westeurope",
+  "defaultHostName": "ls-web-doc89.azurewebsites.net",
+  "state": "Running",
+  ...
+}
+```
+
+Get the web app:
+
+```bash
+az webapp show \
+  --name ls-web-doc89 \
+  --resource-group rg-web-demo
+```
+
+### Read and update web app configuration
+
+Read the current web app configuration:
+
+```bash
+az webapp config show \
+  --name ls-web-doc89 \
+  --resource-group rg-web-demo
+```
+
+```bash title="Output"
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg-web-demo/providers/Microsoft.Web/sites/ls-web-doc89/config/web",
+  "linuxFxVersion": "PYTHON|3.11",
+  "http20Enabled": true,
+  "alwaysOn": false,
+  "ftpsState": "FtpsOnly",
+  ...
+}
+```
+
+Update web app configuration:
+
+```bash
+az webapp config set \
+  --name ls-web-doc89 \
+  --resource-group rg-web-demo \
+  --always-on false \
+  --http20-enabled true
+```
+
+```bash title="Output"
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg-web-demo/providers/Microsoft.Web/sites/ls-web-doc89",
+  "http20Enabled": true,
+  "alwaysOn": false,
+  ...
+}
+```
+
+### Delete and verify
+
+Delete the web app and verify it no longer appears:
+
+```bash
+az webapp delete \
+  --name ls-web-doc89 \
+  --resource-group rg-web-demo
+
+az webapp list --resource-group rg-web-demo
+```
+
+```bash title="Output"
+[]
+```
+
+## API Coverage
+
+<AzureFeatureCoverage service="Microsoft.Web" client:load />