Add tasks for all the new languages

Task/Maximum-triangle-path-sum/Sidef/maximum-triangle-path-sum-1.sidef

@@ -0,0 +1,12 @@
+var sum = [0]
+
+ARGF.each {  |line|
+    var x = line.words.map{.to_n}
+    sum = [
+            x.first + sum.first,
+            1 ..^ x.end -> map{|i| x[i] + [sum[i-1, i]].max}...,
+            x.last + sum.last,
+          ]
+}
+
+say sum.max

Task/Maximum-triangle-path-sum/Sidef/maximum-triangle-path-sum-2.sidef

@@ -0,0 +1,8 @@
+var triangle = ARGF.slurp.lines.map{.words.map{.to_n}}
+ 
+func max_value(i=0, j=0) is cached {
+    i == triangle.len && return 0
+    triangle[i][j] + [max_value(i+1, j), max_value(i+1, j+1)].max
+}
+ 
+say max_value()