Add tasks for all the new languages

Task/Rate-counter/ERRE/rate-counter.erre

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+PROGRAM RATE_COUNTER
+
+!
+! for rosettacode.org
+!
+
+!
+! This is an example, replace with the task you want to  measure
+!
+PROCEDURE TASK_TO_MEASURE
+  LOCAL I
+    FOR I=1 TO 1000000 DO
+    END FOR
+END PROCEDURE
+
+BEGIN
+    PRINT("Method 1: Calculate reciprocal of elapsed time:")
+    FOR TRIAL%=1 TO 3 DO
+      START=TIMER
+      TASK_TO_MEASURE
+      FINISH=TIMER
+      PRINT("Rate =";100/(FINISH-START);"per second")
+    END FOR
+
+    PRINT("Method 2: Count completed tasks in one minute:")
+    FOR TRIAL%=1 TO 3 DO
+      RUNS%=0
+      FINISH=TIMER+60
+      REPEAT
+        TASK_TO_MEASURE
+        IF TIMER<FINISH THEN RUNS%+=1 END IF
+      UNTIL TIMER>=FINISH
+      PRINT("Rate =";RUNS%;"per minute")
+    END FOR
+END PROGRAM

Task/Rate-counter/Sidef/rate-counter.sidef

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+var benchmark = frequire('Benchmark');
+
+func job1 {
+    #...job1 code...
+}
+func job2 {
+    #...job2 code...
+}
+
+const COUNT = -1;   # run for one CPU second
+benchmark.timethese(COUNT, Hash.new('Job1' => job1, 'Job2' => job2));