Allow custom alias paths

Feature Request

https://wxt.dev/guide/essentials/config/typescript.html#tsconfig-paths
https://wxt.dev/api/reference/wxt/interfaces/InlineConfig.html#alias

In generate-wxt-dir.ts > getTsConfigEntry, it creates paths using the following code

const paths = Object.entries(wxt.config.alias)
    .flatMap(([alias, absolutePath]) => {
      const aliasPath = getTsconfigPath(absolutePath);
      return [
        `"${alias}": ["${aliasPath}"]`,
        `"${alias}/*": ["${aliasPath}/*"]`,
      ];
    })

This doesn't work with the way our monorepo is setup, which uses something more like "${alias}/*": ["${aliasPath}/src/lib/*"]

It would be great to have more control over how the alias paths are created. In our case, it would be better to prevent adding the wildcard version so we could add our own

Is your feature request related to a bug?

N/A

What are the alternatives?

Not using the generated tsconfig.

Start in generate-wxt-dir.ts at getTsConfigEntry, then read the linked TypeScript paths and InlineConfig alias documentation. Determine how custom alias path generation should be configured, including omitting the wildcard mapping. Done means generated tsconfig paths support the requested monorepo layout without requiring users to avoid the generated tsconfig.