Add encoding configuration setting to REST and Scape (#90254)

* Create new config parameter for default character encoding if no character encoding is declared

* Changes suggested by gjohansson-ST

* Added config flow for scape

* Removed "character"

* Change to create_async_httpx_client

* Remove CONF_ENCODING from Scrape SENSOR_SCHEMA

* Debug scrape test

tests/components/scrape/conftest.py

@@ -9,7 +9,13 @@ import pytest
 
 from homeassistant.components.rest.data import DEFAULT_TIMEOUT
 from homeassistant.components.rest.schema import DEFAULT_METHOD, DEFAULT_VERIFY_SSL
-from homeassistant.components.scrape.const import CONF_INDEX, CONF_SELECT, DOMAIN
+from homeassistant.components.scrape.const import (
+    CONF_ENCODING,
+    CONF_INDEX,
+    CONF_SELECT,
+    DEFAULT_ENCODING,
+    DOMAIN,
+)
 from homeassistant.config_entries import SOURCE_USER
 from homeassistant.const import (
     CONF_METHOD,
@@ -38,6 +44,7 @@ async def get_config_to_integration_load() -> dict[str, Any]:
         CONF_METHOD: DEFAULT_METHOD,
         CONF_VERIFY_SSL: DEFAULT_VERIFY_SSL,
         CONF_TIMEOUT: DEFAULT_TIMEOUT,
+        CONF_ENCODING: DEFAULT_ENCODING,
         "sensor": [
             {
                 CONF_NAME: "Current version",