feat: update to go modules

vendor/github.com/alecthomas/chroma/formatters/api.go

@@ -1,55 +0,0 @@
-package formatters
-
-import (
-	"io"
-	"sort"
-
-	"github.com/alecthomas/chroma"
-	"github.com/alecthomas/chroma/formatters/html"
-)
-
-var (
-	// NoOp formatter.
-	NoOp = Register("noop", chroma.FormatterFunc(func(w io.Writer, s *chroma.Style, iterator chroma.Iterator) error {
-		for t := iterator(); t != chroma.EOF; t = iterator() {
-			if _, err := io.WriteString(w, t.Value); err != nil {
-				return err
-			}
-		}
-		return nil
-	}))
-	// Default HTML formatter outputs self-contained HTML.
-	htmlFull = Register("html", html.New(html.Standalone(), html.WithClasses()))
-)
-
-// Fallback formatter.
-var Fallback = NoOp
-
-// Registry of Formatters.
-var Registry = map[string]chroma.Formatter{}
-
-// Names of registered formatters.
-func Names() []string {
-	out := []string{}
-	for name := range Registry {
-		out = append(out, name)
-	}
-	sort.Strings(out)
-	return out
-}
-
-// Get formatter by name.
-//
-// If the given formatter is not found, the Fallback formatter will be returned.
-func Get(name string) chroma.Formatter {
-	if f, ok := Registry[name]; ok {
-		return f
-	}
-	return Fallback
-}
-
-// Register a named formatter.
-func Register(name string, formatter chroma.Formatter) chroma.Formatter {
-	Registry[name] = formatter
-	return formatter
-}