Move tests to tests dir

examples/numarray/test/numarray_tests.janet

@@ -0,0 +1,23 @@
+(import cook)
+
+(cook/make-native
+    :name "numarray"
+    :source @["numarray.c"])
+
+(import build/numarray :as numarray)
+
+(def a (numarray/new 30))
+(print (get a 20))
+(print (a 20))
+
+(put a 5 3.14)
+(print (a 5))
+(set (a 5) 100)
+(print (a 5))
+
+# (numarray/scale a 5))
+# ((a :scale) a 5)
+(:scale a 5)
+(for i 0 10 (print (a i)))
+
+(print "sum=" (:sum a))