Feat/validation

[halvardssm]

PR Summary: feat/validation - Add validation namespace + crypto fixes

New Features

• validation/ namespace: Added a complete JSON Schema validation module with:

  • StandardSchemaV1, StandardJSONSchemaV1, and JSONSchema compliant validator
  • Utility functions for schema handling (validation/utils.ts)
  • Comprehensive test coverage (validation/*.test.ts)
  • README documentation

• types/mod.ts: Added new constructor type helpers with examples.

Fixes

• crypto/hotp.ts: Fixed type errors due to changes in Deno types (buffer handling for HOTP generation).
• json/json_schema/2020_12.ts: Minor adjustments for consistency.

Chores

• Updated WASM dependencies (_wasm/, crypto/_wasm/, json/_wasm/).
• Cleaned up imports, lint fixes, and README improvements.
• Added .vscode/ and Zed to .gitignore.
• Updated deno.json and crypto/deno.json configurations.

Files Changed

• Core: 23 files (validation, types, crypto, json)
• Generated: 15 WASM files (argon2, bcrypt, scrypt, jsonpath)
• Config: .gitignore, deno.json, README.md

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