feat: add support for bun lockfile

[sjaghori]

Before submitting the PR, please make sure you do the following

• It's really useful if your PR references an issue where it is discussed ahead of time.
• Prefix your PR title with feat:, fix:, chore:, or docs:.
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.

Tests

• Run the tests with pnpm test and lint the project with pnpm lint

generator

If you change something in the generator, please also:

• add some snapshot tests to the packages/generator/test/generator.test.ts-file
• then run pnpm test => you should see your tests failing
• run pnpm test:update-generated-files
• again run pnpm test => your tests should pass
• then add all the created *.expected.*-files to the git-index and
• make sure these files look like you would expect them
• finally commit these files to the repository

[sjaghori]

resolves: #760