Add 2 Gang ESP configuration example

[Kaldek]

Added configuration example for 2 Gang ESP8266 based configuration.

Brief description of the changes

Added example configuration for a 2-gang using an ESP8266.

Type of changes

• New device
• [ * ] Update existing device
• Removing a device
• General cleanup
• Other

Checklist:

• [*] There are no passwords or secrets references in any examples.
  The only exceptions are !secret wifi_ssid and !secret wifi_password.
• [*] The wifi or ethernet block has no static / manual ip address specified.
• [*] The first configuration provided should be hardware definitions only.
  A more involved example can be provided in a separate configuration block.

[netlify]

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Lighthouse	1 paths audited Performance: 77 (🔴 down 1 from production) Accessibility: 97 (no change from production) Best Practices: 100 (no change from production) SEO: 92 (no change from production) PWA: - View the detailed breakdown and full score reports

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