Add a repository request issue template

Author: 0x2b3bfa0

.github/ISSUE_TEMPLATE/repository-request.md

@@ -0,0 +1,26 @@
+---
+name: Repository request
+about: Request the creation or migration of a repository to this organization
+title: 'Repository request: [project-name]'
+labels: repository request
+assignees: 0x2b3bfa0, PrinsFrank
+
+---
+
+## I would like to...
+- [x] Import an existing repository
+- [ ] Create a new repository
+
+## The current address of my repository is...
+<!-- paste the address here -->
+
+## The Slack channel of the project is...
+<!-- paste the name of the Slack channel -->
+
+## I want to license the data under...
+
+- [x] Hardware and/or firmware: CERN-OHL-P
+- [ ] Software: Blue Oak License 1.0.0
+- [ ] Guides, instructional videos, and other materials: Creative Commons Attribution 4.0
+
+**Refer to the [official licensing guide](https://helpfulengineering.slack.com/archives/C010GJ68R1N/p1584974903050100)**