Add more customization options

This PR adds more customization options:

• Swap the colors of the first and second word
• Dark mode (for use on websites with a dark background), it turns the secondary text color to white
• Custom accent color as an advanced setting

Additionally, for the custom accent color feature to work correctly, the halo and cross components have been converted from PNG to SVG and the renderer uses SVG paths to draw them now with the desired color.

Note: Chinese translation was not added, as I don't speak Chinese and didn't want to make a mistake.

Preview:

https://github.com/nulla2011/bluearchive-logo/assets/20266711/b136632d-e1c7-4e5c-a3c7-4493d84e1a4d

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Name	Status	Preview	Comments	Updated (UTC)
bluearchive-logo	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 13, 2023 11:42pm