feat: add automated font installation system with fontconfig management

- Install fonts from Google Fonts via TOML config
- Generate fontconfig XML with optimized rendering settings
- Auto-run on config changes via chezmoi hook
- Support GitHub-sourced fonts (Iosevka) alongside Google Fonts

home/dot_config/fontconfig/fonts.toml

@@ -0,0 +1,31 @@
+# Font Configuration for Chezmoi
+# This file defines which fonts to install and configure.
+# Fonts are sourced from Google Fonts automatically.
+#
+# To add a font: Just type its name - fuzzy matching will help if you misspell.
+# To swap fonts: Change the primary, run `chezmoi apply`, done!
+#
+# Run `install-fonts.ts` manually to see available fonts or troubleshoot.
+
+[ui]
+# Sans-serif fonts for user interface elements
+primary = "Inter"
+fallback = "Noto Sans"
+
+[serif]
+# Serif fonts for documents and reading
+primary = "Source Serif 4"
+fallback = "Noto Serif"
+
+[mono]
+# Monospace fonts for code and terminals
+primary = "Iosevka"
+fallback = "JetBrains Mono"
+
+[emoji]
+# Emoji font for unicode emoji support
+primary = "Noto Color Emoji"
+
+# Optional: Uncomment to install accessibility-focused fonts
+# [accessibility]
+# primary = "Atkinson Hyperlegible"