Add Gigabyte G27Q as compatible device

Closes mvp#551.

Author: mvp

README.md

@@ -59,6 +59,7 @@ This is list of known compatible USB hubs:
 | Delock             | 62537                                                | 4     | 3.0 |           | 2017    | 2021 |
 | Delock             | 87445 ([note](https://git.io/Jsuz5))                 | 4     | 2.0 |`05E3:0608`| 2009    | 2013 |
 | Elecom             | U2H-G4S                                              | 4     | 2.0 |           | 2006    | 2011 |
+| Gigabyte           | G27Q monitor ([see](http://tinyurl.com/G27Q551)      | 4     | 3.0 |`2109:0817`| 2020    |      |
 | GlobalScale        | ESPRESSObin SBUD102 V5                               | 1     | 3.0 |`1D6B:0003`| 2017    |      |
 | Hardkernel         | ODROID-C4 ([note](https://git.io/JG0mP))             | 4     | 3.0 |           | 2020    |      |
 | Hawking Technology | UH214                                                | 4     | 2.0 |           | 2003    | 2008 |