Adding a "meta issue" template (opensearch-project#12148)

Signed-off-by: CEHENKLE <[email protected]>
Co-authored-by: Andrew Ross <[email protected]>

.github/ISSUE_TEMPLATE/meta.yml

@@ -0,0 +1,28 @@
+name: ✨ Meta Issue
+description: An issue that collects other issues together to describe a larger project or activity.
+title: '[META] <title>'
+labels: ['Meta, untriaged']
+body:
+  - type: textarea
+    attributes:
+      label: Please describe the end goal of this project
+      description: A clear and concise description of this project/endeavor.  This should be understandable to someone with no context.
+      placeholder: Ex. Views is a way to project indices in OpenSearch, these views act as a focal point for describing the underlying data and how the data is accessed. It allows for restricting the scope and filtering the response consistently.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Supporting References
+      description: Please provide links (and descriptions!) to RFCs, design docs, etc
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Issues
+      description: Please create a list of issues that should be tracked by this meta issue, including a short description.  The purpose is to provide everyone on the project with an "at a glance" update of the state us the work being tracked.  If you use the format "- [ ]" it will put your list into a checklist.
+      placeholder: Ex. - [ ] https://github.com/opensearch-project/security/issues/3888 Add views to the cluster metadata schema
+    validations:
+      required: true
+
+
+