Fix hardcoded package name and template configuration issues

[Copilot]

The template had a hardcoded package name preventing correct project generation with custom packages, plus outdated tooling configuration.

Changes

• Server.scala: Replace hardcoded package com.nachinius.g8test with template variable $package$
• Main.scala: Remove unused BlazeServerBuilder import
• .scalafmt: Rename to .scalafmt.conf for modern scalafmt compatibility
• README.md: Fix repository name typo and remove pinned Scala patch version

Impact

Before: Generated projects would have incorrect package names, ignoring user input.

// Generated Server.scala (broken)
package com.nachinius.g8test  // Always this, regardless of user's --organization flag

After: Template variables work as intended.

// Generated Server.scala (fixed)
package $package$  // Expands to user's specified organization and name

Original prompt

Improve functionaly in the template

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.