Support using shorthand to specify mirror , propose by @kevin1sMe
Changelog
- 5c75a32 docs: update docs for shorthand
- 923bcd2 chore: improve coverage
- 03b8059 feat: support specify mirror by shorthand
- d092f34 feat: add custom mirror
- a5dc244 chore: fix typo
- 222c342 chore: try to fix G104 errors unhandled
- e42b813 chore: avoid hardcode cache directories
