config: barpyrus: config.py: add conky_icon function for easy formatting

In order to not having to repeat the same string sequence over and over
again there now is a helper method which does exactly this.

config/barpyrus/config.py

@@ -46,6 +46,12 @@ color = {
 def frame(content, bg, fg, padding = (3, 3)):
     return Theme(bg = color[bg], fg = color[fg], padding = padding)(content)
 
+# function to insert colored icon into conky_text
+def conky_icon(icon_code, icon_color, text_color = 'lightgrey'):
+    text = '%{F\\' + color[icon_color] + '}%{T2}' + icon_code + '%{T-}'
+    text += '%{F\\' + color[text_color] + '}'
+    return text
+
 # conky specific configuration
 conky_text = ''