Reorganize and revise documentation

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]"
+labels: bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. 
+2. 
+3. 
+4. 
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for improving the ATT&CK Workbench Frontend
+title: "[REQUEST]"
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is.
+
+**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.

.github/pull_request_template.md

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+## Description of what has changed
+
+### All Submissions:
+
+* [ ] Have you followed the guidelines in our Contributing document?
+* [ ] Have you checked to ensure there aren't other open [Pull Requests](https://github.com/mitre-attack/attack-data-model/pulls) for the same update/change?
+
+<!-- You can erase any parts of this template not applicable to your Pull Request. -->
+
+### New Feature Submissions:
+
+1. [ ] Does your submission pass tests?
+2. [ ] Have you lint your code locally prior to submission?
+
+### Changes to Core Features:
+
+* [ ] Have you added an explanation of what your changes do and why you'd like us to include them?
+* [ ] Have you written new tests for your core changes, as applicable?
+* [ ] Have you successfully ran tests with your changes locally?

CONTRIBUTING.md

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+# Contributing to MITRE ATT&CK® Data Model
+
+Thank you for your interest in contributing to the MITRE ATT&CK® Data Model! We welcome contributions from the community to help improve and expand this TypeScript library. 
+
+Please see our contributor guide for more information: https://mitre-attack.github.io/attack-data-model/docs/contributing/

docusaurus/docs/contributing/dev-setup.mdx

@@ -2,6 +2,10 @@
 
 Follow these steps to get the ADM codebase running on your local machine.
 
+## Requirements
+
+- [Node.js](https://nodejs.org/) v18.20
+
 ## Clone and install
 
 ```bash