Merge branch 'gitlab/mr-template' into 'dev'

MR template: Release algo

See merge request !685

.gitlab/merge_request_templates/Release (vidjil-algo).md

+
+## Preparation
+
+* [ ] New features are described in `doc/vidjil-algo.md`
+* [ ] Breaking changes (or needed) are understood
+ 
+On the `feature-a/release` branch, the last commit is the release commit updating the three following files:
+ * [ ] CHANGELOG
+ * [ ] `doc/vidjil-algo.md` with the proper release tag
+ * [ ] `algo/release` with the proper release tag
+
+## Pipelines
+
+https://gitlab.inria.fr/vidjil/vidjil/pipelines/XXXXX
+
+Usual tests should pass, but also:
+* [ ] prepare_release
+* [ ] valgrind_unit
+* [ ] valgrind_functional
+* [ ] multiple_tests
+
+Benchmarks
+* [ ] almost no change...
+* [ ] ... or significant changes are understood
+
+## Tag and push
+
+* [ ] tag (`git tag release-20XX-XX; git push origin release-20XX-XX`)
+* [ ] mirror to GH
+
+## Deploy
+
+* [ ] doc 
+* [ ] `app` (vidjil-algo-next)
+* [ ] `app` if needed, update server configs
+* [ ] `app` notification to users
+* [ ] `app` (vidjil-algo)
+* [ ] `app` test on production (X5 and L4)
+* [ ] `hds` queue for qualification ?
+* [ ] twice a year, communicate to users
+
+/label ~cpp
+