feat: added PR and Issue template

.github/ISSUE_TEMPLATE/bug-report.md

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+name: 🐞 Bug
+description: File a bug/issue
+title: "[BUG] <title>"
+labels: ["Bug", "Needs Triage"]
+assignees: fabian-hiller
+body:
+- type: checkboxes
+  attributes:
+    label: Is there an existing issue for this?
+    description: Please search to see if an issue already exists for the bug you encountered.
+    options:
+    - label: I have searched the existing issues
+      required: true
+- type: textarea
+  attributes:
+    label: Current Behavior
+    description: A concise description of what you're experiencing.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Expected Behavior
+    description: A concise description of what you expected to happen.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Steps To Reproduce
+    description: Steps to reproduce the behavior.
+    placeholder: |
+      1. Go to ...
+      1. click on...
+      1. scroll down...
+      1. See error...
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Environment
+    description: |
+      examples:
+        - **OS**: Ubuntu 20.04
+        - **Node**: 13.14.0
+        - **npm**: 7.6.3
+    value: |
+        - OS:
+        - Node:
+        - npm:
+    render: markdown
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Anything else?
+    description: |
+      Links? References? Anything that will give us more context about the issue you are encountering!
+
+      Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
+  validations:
+    required: false

.github/ISSUE_TEMPLATE/feature-request.md

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+name: 🚀 Feature Request
+about: Suggest an idea or enhancement for Valibot
+title: "[Feature Request]: "
+labels: enhancement
+assignees: fabian-hiller
+body:
+- type: textarea
+  attributes:
+    label: Description
+    description: Please provide a detailed description of the feature you are requesting. Explain how it would benefit Valibot and its users.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Implementation Details (Optional)
+    description: If you have any suggestions on how this feature could be implemented, provide details here. Code snippets or diagrams can be helpful.
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Steps To Reproduce
+    description: Steps to reproduce the behavior.
+    placeholder: |
+      1. In this environment...
+      1. With this config...
+      1. Run '...'
+      1. See error...
+  validations:
+    required: false
+- type: textarea
+  attributes:
+    label: Anything else?
+    description: |
+      Links? References? Anything that will give us more context about the issue you are encountering!
+
+      Tip: You can attach images or log files by clicking this area to highlight it and then dragging files in.
+  validations:
+    required: false

.github/pull_request_template.md

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+---
+name: 🚀 Pull Request
+about: Submit changes to Valibot
+title: "[PR]: "
+labels: enhancement
+assignees: [fabian-hiller]
+---
+
+## 🚀 Pull Request
+
+### Description
+
+<!-- Please provide a brief description of the changes you've made and why. -->
+
+### Related Issue
+
+<!-- If this pull request is related to an issue, please reference it here (e.g., "Closes #123"). -->
+
+### Changes Made
+
+<!-- List the changes you've made in this pull request.
+
+- Change 1
+- Change 2
+- ... -->
+
+### Screenshots/screenrecord (if applicable)
+
+<!-- If your changes include visual updates, add relevant screenshots. -->
+
+### Checklist
+
+- [ ] I have tested the changes locally.
+- [ ] I have updated the documentation as needed.
+- [ ] My code follows the project's coding style and conventions.
+- [ ] I have added or updated relevant tests.
+
+### Additional Context
+
+<!-- Add any additional context or information about the pull request. -->
+
+---
+
+## 🗨️ Discussion
+
+<!-- Feel free to discuss this pull request with the community in the comments section below. -->
+
+<!--
+Please follow the pull request template as closely as possible for effective review and merging.
+-->