std.sort: add pdqsort and heapsort

tools/generate_JSONTestSuite.zig

@@ -23,7 +23,7 @@ pub fn main() !void {
     while (try it.next()) |entry| {
         try names.append(try allocator.dupe(u8, entry.name));
     }
-    std.sort.sort([]const u8, names.items, {}, (struct {
+    std.mem.sort([]const u8, names.items, {}, (struct {
         fn lessThan(_: void, a: []const u8, b: []const u8) bool {
             return std.mem.lessThan(u8, a, b);
         }