add more colorschemes, fix tests and improve documentation

websurfx/config.lua

@@ -3,5 +3,16 @@ port = "8080" -- port on which server should be launched
 binding_ip_addr = "127.0.0.1" --ip address on the which server should be launched.
 
 -- Website
+-- The different colorschemes provided are:
+-- {{
+-- catppuccin-mocha
+-- dracula
+-- monokai
+-- nord
+-- oceanic-next
+-- solarized-dark
+-- solarized-light
+-- tomorrow-night
+-- }}
 colorscheme = "catppuccin-mocha" -- the colorscheme name which should be used for the website theme
 theme = "simple" -- the theme name which should be used for the website