feat(web): Theme customizer

[TimVanOnckelen]

This PR provides a feature for server administrators with the ability to customize the styles for both the light and dark themes of the web interface using color pickers. This is still a wip

[github-actions]

Label error. Requires exactly 1 of: changelog:.*. Found: 🖥️web, 🗄️server

[alextran1502]

Thanks for the PR. Are you planning to have this to be set with the existing config file?

[TimVanOnckelen]

Thanks for the PR. Are you planning to have this to be set with the existing config file?

The idea is to update the existing css variables on pageload, and storing the customized values in the db.

[alextran1502]

Let's spell out the property name here as foreground, background

[TimVanOnckelen]

This may be confusing as the css variables use bg and fg in favor of background and foreground.

@layer base {
  :root {
    /* light */
    --immich-primary: 66 80 175;
    --immich-bg: 255 255 255;
    --immich-fg: 0 0 0;
    --immich-gray: 246 246 244;
    --immich-error: 229 115 115;
    --immich-success: 129 199 132;
    --immich-warning: 255 183 77;

    /* dark */
    --immich-dark-primary: 172 203 250;
    --immich-dark-bg: 0 0 0;
    --immich-dark-fg: 229 231 235;
    --immich-dark-gray: 33 33 33;
    --immich-dark-error: 211 47 47;
    --immich-dark-success: 56 142 60;
    --immich-dark-warning: 245 124 0;
  }
}