build(biome): expand file includes to cover tests and scripts

Include tests/**/*.ts and *.mjs in biome's file scope for
consistent linting and formatting across the codebase.

Signed-off-by: leocavalcante <[email protected]>

Author: leocavalcante

biome.json

@@ -23,6 +23,6 @@
 		}
 	},
 	"files": {
-		"includes": ["src/**/*.ts"]
+		"includes": ["src/**/*.ts", "tests/**/*.ts", "*.mjs"]
 	}
 }