Reimplement Project Template

[Valkryst]

This PR fixes some minor annoyances that I ran into when starting the project on Hyperskill:

• Updated ApplicationRunner to start the Swing application on the EDT.
• Updated the constructor in WebCrawler to:
  • Add a title to the frame.
  • Remove setLayout(null) as it seemed to serve no purpose.
  • Swap setSize for setPreferredSize.
  • Update all superclass calls to explicitly use super. for clarity.
  • Update the order of operations to ensure the frame is centered on the screen when started.