added a very basic frequency module

themes/icons/ascii.json

@@ -4,6 +4,7 @@
 	},
 	"memory": { "prefix": "ram" },
 	"cpu": { "prefix": "cpu" },
+	"frequency": { "prefix": "frequency" },
 	"disk": { "prefix": "hdd" },
 	"dnf": { "prefix": "dnf" },
 	"brightness": { "prefix": "o" },

themes/icons/awesome-fonts.json

@@ -8,6 +8,7 @@
 	"datetime": { "prefix": "" },
 	"memory": { "prefix": "" },
 	"cpu": { "prefix": "" },
+	"frequency": { "prefix": "" },
 	"disk": { "prefix": "" },
 	"dnf": { "prefix": "" },
 	"pacman": { "prefix": "" },

themes/icons/ionicons.json

@@ -8,6 +8,7 @@
 	"datetime": { "prefix": "\uf3b3" },
 	"memory": { "prefix": "\uf389" },
 	"cpu": { "prefix": "\uf4b0" },
+	"frequency": { "prefix": "\uf4b0" },
 	"disk": { "prefix": "\u26c1" },
 	"dnf": { "prefix": "\uf2be" },
 	"pacman": { "prefix": "\uf2be" },