Add task to install all requirements of an integration (#108262)

* Add task to install the requirements of an integration

* Gather recursive requirements

* Move valid_integration to util

* Apply suggestions from code review

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>

* Implement suggestions

---------

Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com>

.vscode/tasks.json

@@ -157,6 +157,20 @@
         "kind": "build",
         "isDefault": true
       }
+    },
+    {
+      "label": "Install integration requirements",
+      "detail": "Install all requirements of a given integration.",
+      "type": "shell",
+      "command": "${command:python.interpreterPath} -m script.install_integration_requirements ${input:integrationName}",
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "presentation": {
+        "reveal": "always",
+        "panel": "new"
+      }
     }
   ],
   "inputs": [