added templates

.gitlab/issue_templates/bug.md

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+### Summary
+
+(Summarize the bug encountered concisely)
+
+### Steps to reproduce
+
+(How one can reproduce the issue - this is very important)
+
+### What is the current *bug* behavior?
+
+(What actually happens)
+
+### What is the expected *correct* behavior?
+
+(What you should see instead)
+
+### Relevant logs and/or screenshots
+
+(Paste any relevant logs - please use code blocks (```) to format console output,
+logs, and code as it's very hard to read otherwise.)
+
+### Possible fixes
+
+(If you can, link to the line of code that might be responsible for the problem)
+
+Also please add labels to your bug issue :
+/label ~BUG ~Reproduced ~Needs investigation

.gitlab/issue_templates/feature_proposal.md

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+### Problem to solve
+
+<!-- What problem do we solve? -->
+
+### Intended users
+
+<!-- Who will use this feature? If known, include any of the following: types of users (e.g. Developer), personas, or specific company roles (e.g. Release Manager). It's okay to write "Unknown" and fill this field in later.
+Personas can be found at https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/ -->
+
+### Further details
+
+<!-- Include use cases, benefits, and/or goals (contributes to our vision?) -->
+
+### Proposal
+
+<!-- How are we going to solve the problem? Try to include the user journey! https://about.gitlab.com/handbook/journeys/#user-journey -->
+
+### Permissions and Security
+
+<!-- What permissions are required to perform the described actions? Are they consistent with the existing permissions as documented for users, groups, and projects as appropriate? Is the proposed behavior consistent between the UI, API, and other access methods (e.g. email replies)? -->
+
+### Documentation
+
+<!-- See the Feature Change Documentation Workflow https://docs.gitlab.com/ee/development/documentation/feature-change-workflow.html
+Add all known Documentation Requirements here, per https://docs.gitlab.com/ee/development/documentation/feature-change-workflow.html#documentation-requirements -->
+
+### Testing
+
+<!-- What risks does this change pose? How might it affect the quality of the product? What additional test coverage or changes to tests will be needed? Will it require cross-browser testing? See the test engineering process for further guidelines: https://about.gitlab.com/handbook/engineering/quality/guidelines/test-engineering/ -->
+
+### What does success look like, and how can we measure that?
+
+<!-- Define both the success metrics and acceptance criteria. Note that success metrics indicate the desired business outcomes, while acceptance criteria indicate when the solution is working correctly. If there is no way to measure success, link to an issue that will implement a way to measure this. -->
+
+### Links / references
+
+/label ~feature

.gitlab/merge_request_templates/checklist_before_merging.md

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+Please make sure your MR is ready to be merged !
+
+- [ ] You added the changes in CHANGELOG.md
+- [ ] You described the MR as below
+- [ ] You updated the [HD APP wiki](https://github.com/recalbox/recalbox-os/wiki/) or the [dev wiki](https://gitlab.com/recalbox/recalbox/wikis/home)
+
+Fixes #XXX
+
+Changes :
+- describe changes here
+
+Related to :
+- link other PR or issues here