bellows VS XiaomiGateway3

https://github.com/zigpy/bellows#warning-about-zigbee-to-wifi-bridges

Following the recommendation from u/flaquito and u/CorgiFinancial, and since I did not want to spend any additional time or money on getting new hardware, I ended up with the following. - Booted up my old laptop, which hasn't been used for 2 years, and set up the docker version of HASS. It was indeed very straightforward. In hindsight, I might redo the process and install either a VM or the supervised version, just so I can have the addons (seems like a cool thing to have). - Adding all WiFi-related things was super easy! TV, PS4, Chromecast, etc. For Yeelight, I had to enable "LAN Control" to all my lamps. - The Xiaomi Smart Home Hub is not offered by default on HASS. I found a custom integration on hacs.xyz (adding HACS integration was also straightforward). The custom Smart Home Hub can be found [here](https://github.com/AlexxIT/XiaomiGateway3). - Enabling the telnet mode was non-trivial for me, as I did not want to change the Mi server to China (seems it loses all current setup?). Note that most online guides tell you to swap over to China to get the "About" menu option so you can enable the telnet. Instead, I found [this](https://gist.github.com/zvldz/1bd6b21539f84339c218f9427e022709), which worked like a charm with the custom integration: first add the gateway using the Mi credentials (it reads the mappings and tokens from the Mi Cloud), then add the gateway *again* by selecting the direct IP + the above definition. You can then delete the cloud-based gateway.