Add Issue and Pull Request templates (#6)

* Add Issue and Pull Request templates

* Oops

.github/ISSUE_TEMPLATE/bugs.yml

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+name: Bug report
+description: Report bugs here.
+labels: [bug]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: "Describe your bug here. And how to reproduce it."
+    validations:
+      required: true
+
+ 
+  - type: dropdown
+    id: btarget
+    attributes:
+      label: "What is your build target?"
+      options:
+        - "Windows"
+        - "Linux"
+        - "Mac"
+        - "Nintendo Switch"
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links: []

.github/ISSUE_TEMPLATE/feature-request.yml

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+name: Feature Request
+description: Ask for a feature or just give ideas!
+labels: [enhancement]
+body:
+  - type: textarea
+    attributes:
+      label: What feature do you want to get added? And how it will work?
+    validations:
+      required: true

.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+<!-- What is the purpose of this PR and what it adds? -->
+
+### Will this Pull Request break anything? 
+<!-- Will it break the compiling? -->
+
+### Suggested Testing Steps
+<!-- See if the compiling fails/break anything in the game. -->