split time between writing docs (uncommited, might be discarded due to low quality) and writing tests leveraging bun apis.

these tests are not completed, therefore they wont be used for github actions pr check workflows (yet).

• wrote docs: beginners guide (partial) and unsupported services (empty)
• extracted typescript types and constant to schema.ts for use in test units
• initialized bun for package management in the future if needed
• created deep.test.ts
• wrote test for checking unknown files outside of the /domains/[apex] directories
• wrote test for checking file names valid subdomain fqdns
• wrote test for checking if json is valid and parse-able