[FEATURE] Add String Web Access scrape and search tools

Feature Area

Integration with external tools

Is your feature request related to a an existing bug? Please link it here.

NA

Describe the solution you'd like

Add two tools for String Web Access, a web data API that returns pages as LLM-ready Markdown and runs web searches:

• StringWebAccessScrapeTool: fetch a URL as Markdown, raw text or JSON, with optional JavaScript rendering, a country for proxy routing, and main-content-only output.
• StringWebAccessSearchTool: web search with engine, country, language and result-count options.

Both would live in lib/crewai-tools/src/crewai_tools/tools/string_web_access_tool/, read STRING_API_KEY (or api_key=), and use requests, which crewai-tools already depends on, so no new dependency.

Describe alternatives you've considered

Using String through MCPServerAdapter against its hosted MCP server works today, but it needs an MCP session, and many crews want a plain tool with typed arguments, like the existing Firecrawl, Scrapfly and Oxylabs tools.

Additional context

We maintain String Web Access and would own the tool's upkeep. A branch with both tools, a README, 10 tool tests, and the regenerated tool.specs.json entries is ready.

Willingness to Contribute

Yes, I'd be happy to submit a pull request

Start in lib/crewai-tools/src/crewai_tools/tools/string_web_access_tool/ and review the prepared branch, README, and the existing Firecrawl, Scrapfly, and Oxylabs tools for conventions. Done means both String Web Access tools support the described options, the 10 tool tests pass, and tool.specs.json contains the regenerated entries.