chore: add issue templates and improve pr template (#99)

.github/pull_request_template.md

@@ -1,22 +1,27 @@
 **Thank you for submitting this pull request**
 
-fix _(please add the issue ID if it exists)_
+fixes _(please add the issue ID if it exists)_
 
-### Referenced pull requests
+## Description
+<!--- Describe your changes in detail -->
 
-<!-- Add URLs of all referenced pull requests if they exist. This is only required when making
-changes that span multiple kiegroup repositories and depend on each other. -->
-<!-- Example:
-- https://github.com/kiegroup/droolsjbpm-build-bootstrap/pull/1234
-- https://github.com/kiegroup/drools/pull/3000
-- https://github.com/kiegroup/optaplanner/pull/899
-- etc.
--->
+## How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, and the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
 
 ### Checklist
 - [ ] Tests added if applicable.
 - [ ] Documentation updated if applicable.
 
+### Merge criteria:
+<!--- This PR will be merged by any repository approver when it meets all the points in the checklist -->
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+
+- [ ] The commits and have meaningful messages; the author will squash them _after approval_ or will ask to merge with squash.
+- [ ] Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
+- [ ] The developer has manually tested the changes and verified that the changes work
+
 > **Note:** `dist/cli/index.js` and `dist/gha/index.js` are automatically generated by git hooks and gh workflows.
 
 <details>