Add tasks for all the new languages

Task/Function-frequency/LiveCode/function-frequency-1.livecode

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+function handlerNames pScript
+    put pScript into pScriptCopy
+    filter pScript with regex pattern "^(on|function).*"
+    -- add in the built-in commands & functions
+    put the commandNames & the functionnames into cmdfunc
+    repeat for each line builtin in cmdfunc
+        put 0 into handlers[builtin]
+    end repeat
+
+    -- add user defined handlers, remove this section of you do not want your own functions included
+    repeat with x = 1 to the number of lines of pScript
+        put word 2 of line x of pScript into handlername
+        put 0 into handlers[handlername]
+    end repeat
+
+    -- count handlers used
+    repeat with x = 1 to the number of lines of pScriptCopy
+        repeat for each key k in handlers
+            if k is among the tokens of line x of pScriptCopy then
+                add 1 to handlers[k]
+            end if
+        end repeat
+    end repeat
+
+    combine handlers using cr and space
+    sort lines of handlers descending by word 2 of each
+    put line 1 to 10 of handlers into handlers
+    return handlers
+end handlerNames

Task/Function-frequency/LiveCode/function-frequency-2.livecode

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+put handlerNames(the script of this stack & cr & the script of this card & cr & the script of me)

Task/Function-frequency/LiveCode/function-frequency-3.livecode

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+if 8
+put 8
+return 8
+function 7
+factorialacc 4  -- user def function for other rosetta task
+factorialr 3  -- user def function for other rosetta task
+handlerNames 3
+factorial 2  -- user def function for other rosetta task
+factorialit 2  -- user def function for other rosetta task
+mouseUp 2

Task/Function-frequency/Sidef/function-frequency.sidef

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+var program = <<'EOT'
+func foo { }
+func bar { }
+
+foo(); foo(); foo()
+bar(); bar();
+EOT
+
+var parser = Parser.new                     # initialize a new parser
+parser.parse_script( code => program )      # parse the code
+
+var data = Perl.to_sidef(parser{:vars}{:main}).flatten
+
+data.sort_by { |v| -v{:count} }.first(10).each { |entry|
+    if (entry{:type} == :func) {
+        say ("Function `#{entry{:name}}` (declared at line",
+             " #{entry{:line}}) is used #{entry{:count}} times")
+    }
+}