Added issue templates

Author: SOF3

Diff for: .github/ISSUE_TEMPLATE/adverse-possession.md

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+---
+name: Adverse Possession Request
+about: File an adverse possession request on an unmaintained plugin.
+title: Adverse Possession of { Plugin Name }
+---
+
+{ Please replace all curly braces with the appropriate information and delete this line. }
+
+I hereby request the adverse possession of the following plugin:
+
+https://poggit.pmmp.io/p/{ Plugin Name }
+
+The aforementioned plugin is eligible for adverse possession because:
+
+{ Please change [ ] to [x] for the appropriate items. }
+
+- [ ] It is not compatible with the latest stable PocketMine-MP API { which version? } as released on { PocketMine-MP release date }, which is more than 14 days ago.
+- [ ] It is not compatible with the latest Minecraft client protocol { protocol number? } as supported by the latest stable PocketMine-MP version as released on { PocketMine-MP release date }, which is more than 28 days ago.
+- [ ] It is suffering from the following **bugs**, which I believe to pose significant usability issues on the users. At least one of these issues has been open for more than 28 days without response from the maintainers.
+  - Links to GitHub issues here
+
+I have offered to help update the plugin to resolve all the issues above in the pull request { link to pull request }, but there have not been any response from the maintainers with regard to the pull request. As a result, I am requesting to take over the control of this release line.
+
+I hereby notify the previous contributors of this adverse possession request:
+
+- { @tag all previous authors and contributors to the plugin here }
+
+If no valid objection is received within 7 days, the permission to release updates for { Plugin name } will be permanently and irreversibly transferred to me.

Diff for: .github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: Help on Discord
+    url: https://discord.gg/bmSAZBG

Diff for: .github/ISSUE_TEMPLATE/setup.md

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+---
+name: Help with project setup
+about: Cannot setup Poggit for a repository
+title: ''
+labels: ''
+assignees: ''
+---
+
+### Issue description
+<!-- What have you tried doing? What is the expected behaviour? -->
+<!-- Provide screenshots if relevant. -->
+
+### Other information
+- Link to repository:
+- Browser version: