Add tasks for all the new languages

Task/ABC-Problem/Sidef/abc-problem-1.sidef

@@ -0,0 +1,17 @@
+func can_make_word(word, blocks) {
+
+    blocks.map! { |b| b.uc.chars.sort.join }.freq!
+
+    func(word, blocks) {
+        var char = word.shift
+        var candidates = blocks.keys.grep { |k| 0 <= k.index(char) }
+
+        for candidate in candidates {
+            blocks{candidate} <= 0 && next;
+            local blocks{candidate} = (blocks{candidate} - 1);
+            return true if (word.is_empty || __FUNC__(word, blocks));
+        }
+
+        return false;
+    }(word.uc.chars, blocks)
+}

Task/ABC-Problem/Sidef/abc-problem-2.sidef

@@ -0,0 +1,19 @@
+var b1 = %w(BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM)
+var b2 = %w(US TZ AO QA)
+
+var tests = [
+    ["A", true, b1],
+    ["BARK", true, b1],
+    ["BOOK", false, b1],
+    ["TREAT", true, b1],
+    ["COMMON", false, b1],
+    ["SQUAD", true, b1],
+    ["CONFUSE", true, b1],
+    ["auto", true, b2],
+];
+
+tests.each { |t|
+    var bool = can_make_word(t[0], t[2]);
+    say ("%7s -> %s" % (t[0], bool));
+    assert(bool == t[1])
+}