add more complex examples (#1)

assets/fibonacci.lua

@@ -0,0 +1,11 @@
+-- fibonacci.lua
+-- This script calculates the 10th number in the Fibonacci sequence and prints it.
+
+local function fibonacci(n)
+    if n <= 1 then return n end
+    return fibonacci(n - 1) + fibonacci(n - 2)
+end
+
+local fib_10 = fibonacci(10)
+print('Fibonacci of 10 is: ' .. fib_10)
+return fib_10