fix: proper module resolution in all cases (Node CJS, Node ESM, bundler)

* Add extensions to all imports

* Set module resolution to `bundler` to avoid Node specific behavior

* Use `ts2mjs` to rename files to `mjs`

* Add extensions to `@bbob/types` imports

* Fix `package.json` for proper ESM extension and type separation

* More module resolution stuff change (`node16` for everything, `node` for Vue 2 plugin)

* Use `ts-jest-resolver` for `js` -> `ts` resolving in Jest

* Add changeset

* Add import extensions to frontend libs

jest.config.js

@@ -7,6 +7,7 @@ module.exports = {
   setupFilesAfterEnv: [`${__dirname}/jest.setup.js`],
   coverageDirectory: './coverage/',
   collectCoverage: true,
+  resolver: "ts-jest-resolver",
   transform: {
     '\\.[jt]sx?$': ['@swc/jest', { ...config }],
   },