Adding disclaimers to release artifacts (#3689)

diff --git a/BUILD b/BUILD
index e69de29..8264048 100644
--- a/BUILD
+++ b/BUILD
@@ -0,0 +1,11 @@
+licenses(["notice"])
+package(default_visibility = ["//visibility:public"])
+
+filegroup(
+    name = "disclaimers",
+    srcs = [
+        "DISCLAIMER",
+        "LICENSE",
+        "NOTICE",
+    ]
+)
diff --git a/scripts/packages/BUILD b/scripts/packages/BUILD
index 0512490..67a185d 100644
--- a/scripts/packages/BUILD
+++ b/scripts/packages/BUILD
@@ -472,6 +472,11 @@
 )
 
 pkg_tar(
+    name = "disclaimers",
+    srcs = ["//:disclaimers"],
+)
+
+pkg_tar(
     name = "heron",
     srcs = generated_release_files,
     extension = "tar.gz",
@@ -499,6 +504,7 @@
         ":heron-lib-third_party",
         ":heron-lib-uploader",
         ":heron-simulator",
+        ":disclaimers",
     ],
 )