chore: replace eslint & prettier w/ biomejs (#21)

* chore: replace eslint & prettier w/ biomejs

* fix syntax error in ci.yml workflow

* ensure that build CI jobs only run if check job succeeds to save resources

src/index.ts

@@ -4,6 +4,6 @@
  */
 
 export { HTMLElement, Component, Fragment } from "./component";
-export { UserConfig as Config } from "./config";
+export { UserConfig as Config, defineConfig } from "./config";
 export { createElement } from "./create-element";
 export * from "./jsx";