Add tasks for all the new languages

Task/Textonyms/Sidef/textonyms.sidef

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+var words = ARGF.grep(/^[[:alpha:]]+\z/);
+
+var dials = words.group_by {
+    .tr('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
+        '2223334445556667777888999922233344455566677778889999');
+}
+
+var textonyms = dials.grep_v { .len > 1 };
+
+say <<-END;
+    There are #{words.len} words which can be represented by the digit key mapping.
+    They require #{dials.len} digit combinations to represent them.
+    #{textonyms.len} digit combinations represent Textonyms.
+    END
+
+say "Top 5 in ambiguity:";
+say textonyms.sort_by { |_,v| -v.len }.first(5).join("\n");
+
+say "\nTop 5 in length:";
+say textonyms.sort_by { |k,_| -k.len }.first(5).join("\n");