Add config flow to roku (#31988)

* create a dedicated const.py

* add DEFAULT_PORT to const.py

* work on config flow conversion.

* remove discovery.

* work on config flow and add tests. other cleanup.

* work on config flow and add tests. other cleanup.

* add quality scale to manifest.

* work on config flow and add tests. other cleanup.

* review tweaks.

* Update manifest.json

* catch more specific errors

* catch more errors.

* impprt specific exceptions

* import specific exceptions

* Update __init__.py

* Update config_flow.py

* Update media_player.py

* Update remote.py

* Update media_player.py

* Update remote.py

* Update media_player.py

* Update remote.py

* Update config_flow.py

* Update config_flow.py

* Update media_player.py

* Update __init__.py

* Update __init__.py

* Update config_flow.py

* Update test_config_flow.py

* Update config_flow.py

* Update __init__.py

* Update test_config_flow.py

* Update remote.py

* Update test_init.py

* Update test_init.py

* Update media_player.py

* Update media_player.py

* Update media_player.py

homeassistant/generated/config_flows.py

@@ -83,6 +83,7 @@ FLOWS = [
     "rachio",
     "rainmachine",
     "ring",
+    "roku",
     "samsungtv",
     "sense",
     "sentry",

homeassistant/generated/ssdp.py

@@ -47,6 +47,13 @@ SSDP = {
             "manufacturer": "konnected.io"
         }
     ],
+    "roku": [
+        {
+            "deviceType": "urn:roku-com:device:player:1-0",
+            "manufacturer": "Roku",
+            "st": "roku:ecp"
+        }
+    ],
     "samsungtv": [
         {
             "st": "urn:samsung.com:device:RemoteControlReceiver:1"