add github templates

.github/issue_template.md

@@ -0,0 +1,28 @@
+<!--
+  Hi there! Thank you for discovering and submitting an issue.
+
+  Before you submit this; let's make sure of a few things.
+  Please make sure the following boxes are ticked if they are correct.
+  If not, please try and fulfil these first.
+-->
+
+<!-- Checked checkbox should look like this: [x] -->
+- [ ] I am on the [latest](https://github.com/KELiON/cerebro/releases/latest) Cerebro.app version
+- [ ] I have searched the [issues](https://github.com/KELiON/cerebro/issues) of this repo and believe that this is not a duplicate
+
+<!--
+  Once those are done, if you're able to fill in the following list with your information,
+  it'd be very helpful to whoever handles the issue.
+  **Hint**: To open devtools use next:
+
+  * Preferences -> Turn on "Developer mode"
+  * Preferences -> Turn on "Show in menu bar"
+  * After that you can select tray menu -> Development -> Dev. tools (main)
+-->
+
+- **OS version and name**: <!-- Replace with version + name -->
+- **Cerebro.app version**: <!-- Replace with version -->
+- **Relevant information from devtools** _(See above how to open it)_: <!-- Replace with info if applicable, or N/A -->
+
+## Issue
+<!-- Now feel free to write your issue, but please be descriptive! Thanks again 🙌 ❤️ -->