Extract shared types and add Regulation type with parsing methods

Move cookie banner types (CookieItem, Category, Regulation, BannerConfig,
etc.) into a dedicated types.ts file. Add a coredata.Regulation type with
parsing, JSON marshaling, and database scanning methods. Hardcode the
geoloc-import data directory since the submodule path is fixed.

Signed-off-by: Émile Ré <emile@getprobo.com>

pkg/coredata/cookie_consent_record.go

@@ -40,7 +40,7 @@ type (
 		ConsentData           json.RawMessage     `db:"consent_data"`
 		Action                CookieConsentAction `db:"action"`
 		SdkVersion            string              `db:"sdk_version"`
-		Regulation            string              `db:"regulation"`
+		Regulation            Regulation          `db:"regulation"`
 		CreatedAt             time.Time           `db:"created_at"`
 	}