chore: Add more descriptive/precise tags to bazel build rules.

Author: iphydf

BUILD.bazel

@@ -8,7 +8,10 @@ haskell_library(
     name = "hs-msgpack-arbitrary",
     srcs = glob(["src/**/*.*hs"]),
     src_strip_prefix = "src",
-    tags = ["no-cross"],
+    tags = [
+        "haskell",
+        "no-cross",
+    ],
     version = "0.1.4",
     visibility = ["//visibility:public"],
     deps = [