Readme revamp

[mov-ebx]

Changes:

• Revamped root readme
  • Fixed minor capitalization mistakes
  • Added download link for Visual Studio build tools
  • Made header emojis consistent
  • Changed "More readme" to "More"
• Revamped "readme pages" readme
  • Renamed to "resources"
  • Added missing emojis and included all emojis in links
• Revamped extensions readme
  • Made it consistent with the other readmes