Add the file command with read subcommand

pkg/portal/file.go

@@ -0,0 +1,27 @@
+package portal
+
+import (
+	"context"
+	"os"
+
+	"github.com/apex/log"
+	"github.com/dpogorzelski/speedrun/proto/portal"
+)
+
+func (s *Server) FileRead(ctx context.Context, file *portal.FileReadRequest) (*portal.FileReadResponse, error) {
+	fields := log.Fields{
+		"context": "file",
+		"command": "read",
+		"name":    file.GetPath(),
+	}
+	log := log.WithFields(fields)
+	log.Debug("Received file read request")
+
+	content, err := os.ReadFile(file.GetPath())
+	if err != nil {
+		log.Error(err.Error())
+		return nil, err
+	}
+
+	return &portal.FileReadResponse{State: portal.State_UNKNOWN, Content: string(content)}, nil
+}