Add improvement template (#10764)

(cherry picked from commit 7c740da242)

.github/ISSUE_TEMPLATE/improvement-report.yml

@@ -0,0 +1,68 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You 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
+#
+#     http://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.
+#
+name: Improvement request
+description: Suggest an improvement for this project
+title: "[Improvement][Module Name] Improvement title"
+labels: [ "improvement", "Waiting for reply" ]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        For better global communication, Please write in English.
+
+        If you feel the description in English is not clear, then you can append description in Chinese, thanks!
+
+  - type: checkboxes
+    attributes:
+      label: Search before asking
+      description: >
+        Please make sure to search in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) first
+        to see whether the same feature was requested already.
+      options:
+        - label: >
+            I had searched in the [issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and found no
+            similar feature requirement.
+          required: true
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: A short description why your want to do this improvement
+
+  - type: checkboxes
+    attributes:
+      label: Are you willing to submit a PR?
+      description: >
+        This is absolutely not required, but we are happy to guide you in the contribution process
+        especially if you already have a good understanding of how to implement the improvement.
+        DolphinScheduler is a totally community-driven project and we love to bring new contributors in.
+      options:
+        - label: Yes I am willing to submit a PR!
+
+  - type: checkboxes
+    attributes:
+      label: Code of Conduct
+      description: |
+        The Code of Conduct helps create a safe space for everyone. We require that everyone agrees to it.
+      options:
+        - label: |
+            I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
+          required: true
+
+  - type: markdown
+    attributes:
+      value: "Thanks for completing our form!"