chore: magefiles cleanup

- removed main.go (I don't think this will ever be used)
- renamed all.go to manager.go

magefiles/main.go

@@ -1,13 +0,0 @@
-//go:build ignore
-
-package main
-
-import (
-	"os"
-
-	"github.com/magefile/mage/mage"
-)
-
-func main() {
-	os.Exit(mage.Main())
-}

magefiles/manager.go

@@ -10,7 +10,11 @@ var Default = All
 
 // All runs all the management tasks.
 func All() error {
-	mg.Deps(Directories, Files, Templates)
+	mg.Deps(
+		Directories,
+		Files,
+		Templates,
+	)
 
 	return nil
 }