Restructure repo so the light variant installs as theme 'tintenblau'

omarchy-theme-install clones the repo into ~/.config/omarchy/themes/<name>
and omarchy-theme-set stages only the repo root. Moving the light variant
to the root makes 'omarchy theme install' produce a working theme; the dark
variant stays as tintenblau-dark/ subfolder.

mako.ini

@@ -0,0 +1,22 @@
+text-color=#0f1628
+border-color=#0f1628
+background-color=#f0ead9
+width=420
+height=110
+padding=10
+border-size=2
+border-radius=4
+font=Liberation Sans 11
+anchor=top-right
+outer-margin=20
+default-timeout=5000
+max-icon-size=32
+
+[app-name=Spotify]
+invisible=1
+
+[mode=do-not-disturb]
+invisible=true
+
+[mode=do-not-disturb app-name=notify-send]
+invisible=false