Adding disclaimers to release artifacts (#3689)

Author: joshfischer1108

BUILD

@@ -0,0 +1,11 @@
+licenses(["notice"])
+package(default_visibility = ["//visibility:public"])
+
+filegroup(
+    name = "disclaimers",
+    srcs = [
+        "DISCLAIMER",
+        "LICENSE",
+        "NOTICE",
+    ]
+)

scripts/packages/BUILD

@@ -471,6 +471,11 @@ pkg_tar(
     package_dir = "lib/simulator",
 )
 
+pkg_tar(
+    name = "disclaimers",
+    srcs = ["//:disclaimers"],
+)
+
 pkg_tar(
     name = "heron",
     srcs = generated_release_files,
@@ -499,6 +504,7 @@ pkg_tar(
         ":heron-lib-third_party",
         ":heron-lib-uploader",
         ":heron-simulator",
+        ":disclaimers",
     ],
 )