Add tasks for all the new languages

Task/Rep-string/LFE/rep-string-1.lfe

@@ -0,0 +1,13 @@
+(defun get-reps (text)
+  (lists:filtermap
+   (lambda (x)
+     (case (get-rep text (lists:split x text))
+       ('() 'false)
+       (x `#(true ,x))))
+   (lists:seq 1 (div (length text) 2))))
+
+(defun get-rep
+  ((text `#(,head ,tail))
+   (case (string:str text tail)
+     (1 head)
+     (_ '()))))