Add Scalafmt configuration and reformat codebase

[halotukozak]

This pull request introduces the following changes:

• Adds a .scalafmt.conf configuration file to enforce code formatting standards.
• Reformats the entire codebase using Scalafmt for consistency.
• Includes a .git-blame-ignore-revs file to exclude the reformat commit from git blame for better traceability.
• Adds the sbt-scalafmt plugin in project/plugins.sbt

[Copilot]

Pull request overview

This PR adds Scalafmt configuration to enforce consistent code formatting across the codebase and reformats all Scala files accordingly. It also includes a .git-blame-ignore-revs file to exclude this formatting commit from git blame.

Key changes:

• Addition of .scalafmt configuration file for code formatting standards
• Reformatting of the entire Scala codebase for consistency
• Addition of .git-blame-ignore-revs file for better git blame traceability

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[ddworak]

One minor note on the PR description: the config file added is .scalafmt.conf (not .scalafmt), and the PR also adds the sbt-scalafmt plugin in project/plugins.sbt