change: add issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behaviour:
+1.
+2.
+3.
+4.
+
+**Expected behaviour**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**System (please complete the following information):**
+ - OS:
+ - GPU:
+ - Minecraft Version:
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enable: false

.github/ISSUE_TEMPLATE/crash_report.md

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+---
+name: Crash report
+about: Create a report to inform us of a constant crash
+title: ''
+labels: crash
+assignees: ''
+
+---
+
+### Read me before you open an issue! ###
+
+#### Instructions
+
+This is a template for the issue you are about to open! It will help you provide the information necessary
+to complete your **crash report**. Before you open an issue, ensure you've completed every step on the checklist below.
+
+- Have you used the search tool to find similar issues? Make sure you are not opening a duplicate.
+- Are you using the latest version of the mod? If not, try updating to see if it resolves your issue.
+
+All good? Please read through the sections below, and fill out any lines starting with an arrow. Then, remove
+everything above this dashed line (including the line itself.)
+
+------------------------
+
+### Version
+
+> Replace this text with the exact version of the mod you are using. Every part of the version is important! If you
+> do not know what version you are using, look at the file name in your "mods" folder.
+>
+> Example: iris-mc1.16.5-1.0.0.jar
+>
+### Reproduction Steps
+
+> Provide information on how to reproduce this game crash. You can either fill this section in like the example below
+> or do something else -- just make sure your instructions are minimal and clear, as other people will need to be able
+> to replicate your issue.
+>
+> Example:
+> 1. Place a Redstone Lamp in front of a Redstone Repeater
+> 2. Use a Lever to activate the Redstone Repeater
+> 3. Nothing happens
+
+### Crash Report File Or Latest Log
+
+> Upload your crash report file as an attachment to this issue (drag-and-drop) or to a service such as GitHub
+> Gist (paste a link) and replace this section. This information is critical in resolving your issue!
+>
+> Tip: Messages like "Exit code 0" from your launcher are not what you're looking for. If your launcher does not
+> provide a button to view the most recent crash report, check your game's "crash-reports" folder for the most recent
+> crash report file.
+
+### Additional Information
+
+> Provide any additional information or context which may be relevant to the issue. If you have none to add,
+> you can remove this section.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.