Update github templates

.github/ISSUE_TEMPLATE.md

+## Before you submit an issue
+Please look up our issues, maybe your problem was mentioned before.
 
+## Description
+Provide a short description of your problem here.
+
+If you executed a specific command:
+```shell
+your command here
+```
+
+Output:
+```shell
+output
+of
+your
+command
+here
+```
+
+## Versions and system information
+chromebrew: `crew --version`
+
+ChromeOS: `cat /etc/lsb-release`
+
+Model: YOUR MODEL HERE
+
+Architecture: `uname -m`
+
+## Addtional information
+Mention things we might need to know. Like:
+
+What I think needs to be done:
+- [ ] step one
+- [ ] step two
+
+---
+
+## That's it
+Thank you for submitting your issue.
+When done, please delete the parts of this template which you don't need or these, which are only for guidance.

.github/PULL_REQUEST_TEMPLATE.md

+Fixes #
+
+(let GitHub automatically colse an issue when this pull request gets merged)
+
+## Before you submit a pull request
+This template is not neccessary when you do simple things like updating packages to the latest version. But in doubt, it's always better so provide some information.
+
+## Description
+Provide a description, what your changes do and why they are important
+
+Please link issues and other pull requests connected to this one.
+
+## Addtional information
+Mention things we might need to know. Like:
+
+Works properly:
+- [x] x86_64
+- [ ] aarch64 (reasons why it doesn't)
+
+---
+
+## That's it
+Thank you for submitting your pull request.
+When done, please delete the parts of this template which you don't need or these, which are only for guidance.