Implemented the initial Go framework

internal/builtin/input.go

@@ -0,0 +1,31 @@
+package builtin
+
+import (
+	"context"
+	"fmt"
+
+	"gitea.maximumdirect.net/eric/seriatim/internal/config"
+	"gitea.maximumdirect.net/eric/seriatim/internal/model"
+	"gitea.maximumdirect.net/eric/seriatim/internal/report"
+)
+
+type jsonFilesReader struct{}
+
+func (jsonFilesReader) Name() string {
+	return "json-files"
+}
+
+func (jsonFilesReader) Read(ctx context.Context, cfg config.Config) ([]model.RawTranscript, []report.Event, error) {
+	if err := ctx.Err(); err != nil {
+		return nil, nil, err
+	}
+
+	raw := make([]model.RawTranscript, 0, len(cfg.InputFiles))
+	for _, inputFile := range cfg.InputFiles {
+		raw = append(raw, model.RawTranscript{Source: inputFile})
+	}
+
+	return raw, []report.Event{
+		report.Info("input", "json-files", fmt.Sprintf("accepted %d input file(s)", len(raw))),
+	}, nil
+}