style: normalize struct field alignment

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

internal/examples/realtimechart/main.go

@@ -15,8 +15,8 @@ func main() {
 
 	v.Config(via.Options{
 		LogLevel: via.LogLevelDebug,
-		DevMode: true,
-		Plugins: []via.Plugin{
+		DevMode:  true,
+		Plugins:  []via.Plugin{
 			// picocss.Default,
 		},
 	})

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 {