chore: update pull request template

Signed-off-by: mitsudome-r <ryohsuke.mitsudome@tier4.jp>

Author: mitsudome-r

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,61 @@
+## Description
+
+## Related links
+
+**Parent Issue:**
+
+- Link
+
+<!-- ⬇️🟢
+**Private Links:**
+
+- [CompanyName internal link]()
+⬆️🟢 -->
+
+## How was this PR tested?
+
+## Notes for reviewers
+
+None.
+
+## Interface changes
+
+None.
+
+<!-- ⬇️🔴
+
+### Topic changes
+
+#### Additions and removals
+
+| Change type   | Topic Type      | Topic Name    | Message Type        | Description       |
+|:--------------|:----------------|:--------------|:--------------------|:------------------|
+| Added/Removed | Pub/Sub/Srv/Cli | `/topic_name` | `std_msgs/String`   | Topic description |
+
+#### Modifications
+
+| Version | Topic Type      | Topic Name        | Message Type        | Description       |
+|:--------|:----------------|:------------------|:--------------------|:------------------|
+| Old     | Pub/Sub/Srv/Cli | `/old_topic_name` | `sensor_msgs/Image` | Topic description |
+| New     | Pub/Sub/Srv/Cli | `/new_topic_name` | `sensor_msgs/Image` | Topic description |
+
+### ROS Parameter Changes
+
+#### Additions and removals
+
+| Change type   | Parameter Name | Type     | Default Value | Description       |
+|:--------------|:---------------|:---------|:--------------|:------------------|
+| Added/Removed | `param_name`   | `double` | `1.0`         | Param description |
+
+#### Modifications
+
+| Version | Parameter Name   | Type     | Default Value | Description       |
+|:--------|:-----------------|:---------|:--------------|:------------------|
+| Old     | `old_param_name` | `double` | `1.0`         | Param description |
+| New     | `new_param_name` | `double` | `1.0`         | Param description |
+
+🔴⬆️ -->
+
+## Effects on system behavior
+
+None.