Add view command

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

internal/lib/file.go

@@ -0,0 +1,22 @@
+package lib
+
+import (
+	"fmt"
+	"os"
+)
+
+func ViewFile(filePath string) string {
+	if _, err := os.Stat(filePath); os.IsNotExist(err) {
+		fmt.Printf("Error: The file for path '%s' was not found\n", filePath)
+		os.Exit(1)
+	}
+
+	content, err := os.ReadFile(filePath)
+
+	if err != nil {
+		fmt.Println("Error opening the file:", err)
+		os.Exit(1)
+	}
+
+	return string(content)
+}