Initial import: chezmoi source for Omarchy (Hyprland)

Imported from prdlk/dotfiles master (efdd827), which supersedes the omarchy
branch (3031416). Drops the Umbriel, Noctalia, niri, CachyOS, macOS, and Blume
docs-site layers; docs/ is plain Markdown.

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "dot_config/fish"]
+	path = dot_config/fish
+	url = https://github.com/prdlk/fish.git
+[submodule "dot_config/hypr"]
+	path = dot_config/hypr
+	url = https://github.com/prdlk/hypr.git