feat: add proposal issue template

Co-authored-by: Esteban BARON <estebanbaron.pro@gmail.com>
Co-authored-by: Arsène FOUGEROUSE <arsene582@gmail.com>

.github/ISSUE_TEMPLATE/proposal.yaml

@@ -0,0 +1,39 @@
+---
+name: Proposal
+description: Propose an enhancement or new feature.
+labels:
+ - proposal
+body:
+ - type: textarea
+ id: change
+ attributes:
+ label: Proposed change
+ description: |-
+ This could be a behavior change, enhanced API, or a new feature.
+ Be explicit about the changes intended and how they will address the problem. 
+ You can include code snippets, architectural diagrams, or any other relevant information.
+ validations:
+ required: true
+ - type: textarea
+ id: usecase
+ attributes:
+ label: Use case
+ description: What is the use case or general motivation for this proposal?
+ validations:
+ required: true
+ - type: textarea
+ id: contribute
+ attributes:
+ label: Contribution
+ description: |-
+ Are you intending or interested in contributing code for this proposal if accepted?
+ If so, please indicate what you are interested in contributing.
+ validations:
+ required: false
+ - type: textarea
+ id: details
+ attributes:
+ label: Other details
+ description: Provide as many details or other information that may be relevant to the proposal.
+ validations:
+ required: false