add pager tui for 'api show' (#46)

pkg/printer/builder.go

@@ -0,0 +1,28 @@
+/*
+Copyright © 2026 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package printer
+
+import "strings"
+
+// a wrapper around strings.Builder for convenience
+type Builder struct {
+	strings.Builder
+}
+
+func (builder *Builder) WriteStringLine(in string) {
+	builder.WriteString(in + "\n")
+}