style: normalize struct field alignment

Run gofmt/goimports to fix whitespace alignment in struct literals,
field declarations, and import ordering.

internal/examples/shakespeare/main.go

@@ -6,9 +6,9 @@ import (
 	"log"
 	"time"
 
+	_ "github.com/mattn/go-sqlite3"
 	"github.com/ryanhamamura/via"
 	"github.com/ryanhamamura/via/h"
-	_ "github.com/mattn/go-sqlite3"
 )
 
 type DataSource interface {

signal.go

@@ -80,4 +80,3 @@ func (s *Signal) Int() int {
 	}
 	return 0
 }
-