Adds new integration [martinstafford/daikin_d3net]

[martinstafford]

Checklist

• I've read the publishing documentation.
• I've added the HACS action to my repository.
• (For integrations only) I've added the hassfest action to my repository.
• The actions are passing without any disabled checks in my repository.
• I've added a link to the action run on my repository below in the links section.
• I've created a new release of the repository after the validation actions were run successfully.

Links

Link to current release: https://github.com/martinstafford/daikin_d3net
Link to successful HACS action (without the ignore key): https://github.com/martinstafford/daikin_d3net/actions/runs/11097009730
Link to successful hassfest action (if integration): https://github.com/martinstafford/daikin_d3net/actions/runs/11097009730