Update README to match the Android project

[matt-livefront]

🚧 Type of change

• 🎂 Other

📔 Objective

Updates the README to match the format that Android is using. This moves Setup above Dependencies and updates the dependency formatting.

Android README: https://github.com/bitwarden/android/blob/main/README.md

📋 Code changes

• README.md: Updated to match Android.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions]

	1 Warning
⚠️	Total coverage less than 80%

Code coverage

Total coverage: 48.18%

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Checkmarx One – Scan Summary & Details – 95b9a668-ea84-42e2-a4f0-6ba8ec2b9c3a

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