feat: replace Handler() method for HTTPServeMux() for better plugin and testing integration; remove via-plugin-picocss dependency from examples; add datastar h.H nodes for data-init, data-effect, and data-ignore-morph; update realtimechart example; other small improvements

internal/examples/pathparams/main.go

@@ -4,7 +4,7 @@ import (
 	"strconv"
 
 	"github.com/go-via/via"
-	"github.com/go-via/via-plugin-picocss/picocss"
+	// "github.com/go-via/via-plugin-picocss/picocss"
 	. "github.com/go-via/via/h"
 )
 
@@ -12,7 +12,7 @@ func main() {
 	v := via.New()
 
 	v.Config(via.Options{
-		Plugins: []via.Plugin{picocss.Default},
+		// Plugins: []via.Plugin{picocss.Default},
 	})
 
 	v.Page("/counters/{counter_id}/{start_at_step}", func(c *via.Context) {