Initial data commit

Task/Caesar-cipher/11l/caesar-cipher.11l

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+F caesar(string, =key, decode = 0B)
+   I decode
+      key = 26 - key
+
+   V r = ‘ ’ * string.len
+   L(c) string
+      r[L.index] = S c
+                      ‘a’..‘z’
+                         Char(code' (c.code - ‘a’.code + key) % 26 + ‘a’.code)
+                      ‘A’..‘Z’
+                         Char(code' (c.code - ‘A’.code + key) % 26 + ‘A’.code)
+                      E
+                         c
+   R r
+
+V msg = ‘The quick brown fox jumped over the lazy dogs’
+print(msg)
+V enc = caesar(msg, 11)
+print(enc)
+print(caesar(enc, 11, decode' 1B))