Disable xpath escape (#406)

I had a second problem with my "Sunrise Internet Box".

Attempting to read the value of the following xpath failed:

```
Device/IP/Interfaces/Interface[Alias='IP_DATA']/IPv4Addresses/IPv4Address[Alias='IP_DATA_ADDRESS']/IPAddress
```

Instead of the IP address I was looking for, `get_value_by_xpath`
returned a JSON structure with lots of status information in it, but not
the IP address I was looking for. Turns out that url quoting messed
things up.

So I added a new parameter to the `get_value_by_xpath` function:

The following now returns  the desired IP address as expected:
```
await client.get_value_by_xpath("Device/IP/Interfaces/Interface[Alias='IP_DATA']/IPv4Addresses/IPv4Address[Alias='IP_DATA_ADDRESS']/IPAddress", { "capability-flags": { "interface": True }}, False)
```

---------

Co-authored-by: Robert Hegner <[email protected]>

Author: rhegner

sagemcom_api/client.py

@@ -414,7 +414,7 @@ async def get_value_by_xpath(self, xpath: str, options: dict | None = None) -> d
         actions = {
             "id": 0,
             "method": "getValue",
-            "xpath": urllib.parse.quote(xpath),
+            "xpath": urllib.parse.quote(xpath, "/=[]'"),
             "options": options if options else {},
         }