Rearrange nre files

tests/stdlib/nre/match.nim

@@ -0,0 +1,18 @@
+include nre, unittest, optional_nonstrict
+
+suite "match":
+  test "upper bound must be inclusive":
+    check("abc".match(re"abc", endpos = -1) == none(RegexMatch))
+    check("abc".match(re"abc", endpos = 1) == none(RegexMatch))
+    check("abc".match(re"abc", endpos = 2) != none(RegexMatch))
+
+  test "match examples":
+    check("abc".match(re"(\w)").captures[0] == "a")
+    check("abc".match(re"(?<letter>\w)").captures["letter"] == "a")
+    check("abc".match(re"(\w)\w").captures[-1] == "ab")
+    check("abc".match(re"(\w)").captureBounds[0].get == 0 .. 0)
+    check("abc".match(re"").captureBounds[-1].get == 0 .. -1)
+    check("abc".match(re"abc").captureBounds[-1].get == 0 .. 2)
+
+  test "match test cases":
+    check("123".match(re"").matchBounds == 0 .. -1)