create config package

config/config.go

@@ -0,0 +1,20 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+)
+
+type AppConfig struct {
+	DataPath string
+}
+
+func Load() AppConfig {
+	// TODO: Handle os.MkdirAll error gracefully
+	homeDir, _ := os.UserHomeDir()
+	ketotrackDir := filepath.Join(homeDir, ".ketotrack")
+	os.MkdirAll(ketotrackDir, 0770) // handle error appropriately
+	return AppConfig{
+		DataPath: filepath.Join(ketotrackDir, "records.json"),
+	}
+}