Remove TypeScript

This removes TypeScript and all dependencies and only keeps a simple
Javascript file that does not have any dependencies and can be run
directly. There is not need for an NPM build any more and we just
call a shell script via Javascript.

With this, we no longer have to commit node_modules and Javascript
compiled from TypeScript code. Also, the shell script can easily be run
directly for local testing.

Signed-off-by: Reinhard Naegele <unguiculus@gmail.com>

main.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# Copyright The Helm Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+SCRIPT_DIR=$(dirname -- "$(readlink -f "${BASH_SOURCE[0]}" || realpath "${BASH_SOURCE[0]}")")
+
+main() {
+    owner=$(cut -d '/' -f 1 <<< "$GITHUB_REPOSITORY")
+    repo=$(cut -d '/' -f 2 <<< "$GITHUB_REPOSITORY")
+
+    args=(--owner "$owner" --repo "$repo")
+    args+=(--charts-dir "${INPUT_CHARTS_DIR?Input 'charts_dir' is required}")
+
+    if [[ -n "${INPUT_CHARTS_REPO_URL:-}" ]]; then
+        args+=(--charts-repo-url "${INPUT_CHARTS_REPO_URL}")
+    fi
+
+    "$SCRIPT_DIR/cr.sh" "${args[@]}"
+}
+
+main