The share ID generation no longer includes the sheet file suffix. This
simplifies share names to just "sharer@random" format.

- Add `rand` dependency for generating share IDs
- Update share path to include sheet name subdirectory
- Add mutable accessor for sheet ID mapping
- Add sheet_share module to vault data structures

- Delete InputPackage struct and related types
- Remove inputs field from SheetData
- Remove input management methods (add_input, deny_input, accept_import)
- Remove export functionality (output_mappings,
  find_longest_common_prefix)
- Update tests to remove input-related assertions
- Clean up unused imports and dependencies

- Replace direct serialization with template-based config file
generation - Add new dependencies: whoami, redox_syscall, wasite,
web-sys - Update VaultConfig structure with new enum types and
serialization attributes - Modify setup_vault to accept vault_name
parameter and use template - Update all test calls to include vault_name
parameter

- Implement SHA1 hash calculation module with async support
- Add file status analysis for tracking moves, creates, and modifications
- Enhance local file management with relative path handling
- Update virtual file actions with improved tracking capabilities

- Adjust test to match new local workspace structure
- Update test imports and dependencies

- Update test for sheet creation and persistence
- Improve test coverage for new sheet features

The authentication function now returns the authenticated member's ID
instead of just () when successful. This provides callers with access to
the authenticated member's identity for subsequent operations.