Add tasks for all the new languages

Task/Draw-a-cuboid/Nim/draw-a-cuboid.nim

@@ -0,0 +1,19 @@
+import strutils
+
+proc cline(n, x, y: int, cde: string) =
+  echo cde[0..0].align n+1,
+    repeatChar(9*x-1, cde[1]),
+    cde[0], cde[2..2].align y+1
+
+proc cuboid(x, y, z: int) =
+  cline y+1, x, 0, "+-"
+  for i in 1..y: cline y-i+1, x, i-1, "/ |"
+  cline 0, x, y, "+-|"
+  for i in 0..4*z-y-3: cline 0, x, y, "| |"
+  cline 0, x, y, "| +"
+  for i in countdown(y-1, 0): cline 0, x, i, "| /"
+  cline 0, x, 0, "+-\n"
+
+cuboid 2, 3, 4
+cuboid 1, 1, 1
+cuboid 6, 2, 1