Create powerlevel10k_dark.omp.json theme

[DanielAtCosmicDNA]

Prerequisites

• [✔] I have read and understood the contributing guide.
• [✔] The commit message follows the conventional commits guidelines.
• [✔] Tests for the changes have been added (for bug fixes / features).
• [✔] Docs have been added/updated (for bug fixes / features).

Description

Creates the theme:

Tips:

If you're not comfortable with working with Git,
we're working a guide (https://ohmyposh.dev/docs/contributing/git) to help you out.
Oh My Posh advises GitKraken (https://www.gitkraken.com/invite/nQmDPR9D) as your preferred cross platform Git GUI power tool.

-->

[JanDeDobbeleer]

Thanks for submitting a PR to the project!

In order to review and merge PRs most efficiently, we require that all PRs grant maintainer edit access before we review them. For information on how to do this, see the documentation.

[JanDeDobbeleer]

👋 @DanielAtCosmicDNA, theme aditions are no longer accepted due to the ever growing set. We do however accept showcasing your custom theme in the 🎨 Themes section or themes channel on Discord.