Add API wrappers, tests, and comprehensive README with response examples

• Add DownloadApi class (inherits RenderApi for backward compat), AuditFeesApi,
  EdgarIndexApi, and 3 new FormAdvApi methods (get_other_business_names,
  get_separately_managed_accounts, get_financial_industry_affiliations)
• Update Download API endpoint from archive.sec-api.io to edgar-mirror.sec-api.io
• Add integration test suite (40 tests) covering all API classes
• Add collapsible response examples to all README sections with full example
  response links, matching the NPM package structure
• Split Form ADV, Insider Trading (Form 3/4/5), and Form N-PX into sub-sections
• Add Bulk Datasets section, Quick Start code, and complete TOC with verified links
• Add examples/api-responses/ with JSON response files for all APIs

Added Form N-CEN API

1.0.32

added Form N-CEN API

Added Form 144 API - Restricted Stock Sales Notifications

1.0.31

added Form 144 API - restricted stock sales notifications

Added APIs for Regulation A filings: Form 1-A, Form 1-K, Form 1-Z

1.0.30

added APIs for Regulation A filings: Form 1-A, Form 1-K, Form 1-Z

Added Form C API - Crowdfunding Campaigns

1.0.29

added Form C API - Crowdfunding Campaigns

Added Form 13F holdings + cover pages API, Form N-PX proxy voting records, SEC enforcement actions, SEC administrative proceedings

1.0.28

added Form 13F holdings + cover pages API, Form N-PX proxy voting rec…

Fixed SEC litigations API examples

1.0.27

fixed SEC litigations API examples

Added SEC Litigation Releases API, struct. data of Form 8K Item 4.01 and 5.02, EDGAR Entities Database

1.0.26

added SEC Litigation Releases API, struct. data of Form 8K Item 4.01 …

Added 202 handler to PDF Generator API

1.0.25

added retry strategy on 202 cache miss for PDF generator

Added PDF Generator API

1.0.24

added PDF Generator API