LOLIN C3 mini wizard support

**Describe the problem you have/What new integration you would like**

Reading some discussions around the internet and the [official documentation](https://www.wemos.cc/en/latest/c3/c3_mini.html#about-wifi), this board requires Tx Power to be set to 8.5dBm to use WIFI, so I would like to automatically have set on my `ymal` file the `output_power: 8.5` when I'm using the wizard for this board.
**Please describe your use case for this integration and alternatives you've tried:**

LOLIN C3 mini WIFI just works if the TX power was set to 8.5dB or with [hardware modifications](https://github.com/arendst/Tasmota/discussions/15443#discussioncomment-2755046).

**Additional context**

The basic fix/implementation looks easy to do but doesn't look great, so I opened a discussion to deal with it at esphome/esphome#3588

No source file or test is named in the request. Read the LOLIN C3 mini official documentation and the linked ESPHome discussion first, then locate the wizard entry for this board. Done means the generated YAML sets output_power: 8.5 for LOLIN C3 mini while leaving other boards unchanged.

Written by the indexing model from the issue text.