Add tasks for all the new languages

Task/Sort-stability/Lasso/sort-stability-1.lasso

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+//Single param array:
+array->sort
+
+//An array of pairs, order by the right hand element of the pair:
+with i in array order by #i->second do => { … }
+
+//The array can also be ordered by multiple values:
+with i in array order by #i->second, #i->first do => { … }

Task/Sort-stability/Lasso/sort-stability-2.lasso

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+local(a = array('UK'='London','US'='New York','US'='Birmingham','UK'='Birmingham'))
+with i in #a order by #i->second do => {^ #i->first+' - '+#i->second+'\r' ^}

Task/Sort-stability/Lasso/sort-stability-3.lasso

@@ -0,0 +1,2 @@
+local(a = array('UK'='London','US'='New York','US'='Birmingham','UK'='Birmingham'))
+with i in #a order by #i->second, #i->first do => {^ #i->first+' - '+#i->second+'\r' ^}

Task/Sort-stability/Ring/sort-stability.ring

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+aList = [["UK", "London"],
+        ["US", "New York"],
+        ["US", "Birmingham"],
+        ["UK", "Birmingham"]]
+see sort(aList,2)

Task/Sort-stability/Sidef/sort-stability.sidef

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+var table = [
+  <UK  London>,
+  <US  New\ York>,
+  <US  Birmingham>,
+  <UK  Birmingham>,
+];
+
+table.sort {|a,b| a[0] <=> b[0]}.each { |col|
+    say "#{col[0]} #{col[1]}"
+}