feat(http_parser): add HTTP QUERY method (RFC 10008) (IDFGH-18266)

[EyJunge1]

Description

Add the RFC 10008 QUERY method to the vendored http_parser so esp_http_server (and Arduino-ESP32 WebServer, which uses this enum) can accept safe, idempotent requests that carry a body.

• HTTP_METHOD_MAP: XX(33, QUERY, QUERY) (HTTP_QUERY)
• Request-line matcher: leading Q → HTTP_QUERY; remaining characters come from method_strings[]
• HTTP_PARSER_HAS_QUERY: feature macro for downstream (the enumerator is not a #define)

This does not change esp_http_server URI registration beyond making HTTP_QUERY a valid httpd_method_t. Callers can then register .method = HTTP_QUERY.

Feature issue: #19072

Related:

• Feature: HTTP QUERY method (RFC 10008) ESP32Async/ESPAsyncWebServer#475
• Add HTTP QUERY method (RFC 10008) ESP32Async/ESPAsyncWebServer#474
• WebServer: read request body for HTTP QUERY (RFC 10008) arduino-esp32#12895

Test

• QUERY /path HTTP/1.1 + Content-Length parses as HTTP_QUERY (not HPE_INVALID_METHOD / 400)
• Existing methods (GET/POST/PATCH/SEARCH/…) unchanged
• http_method_str(HTTP_QUERY) returns "QUERY"
• HTTP_PARSER_HAS_QUERY is defined

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Note

Low Risk
Adds a new recognized HTTP method in the parser and documents registration; existing methods and error handling paths are unchanged aside from QUERY no longer mapping to invalid/501.

Overview
Adds RFC 10008 HTTP_QUERY to the vendored http_parser, so esp_http_server can register and serve QUERY requests instead of treating them as unknown methods (501).

The parser gains HTTP_QUERY in HTTP_METHOD_MAP and request-line dispatch for a leading Q, which completes against the "QUERY" method string like other methods. English and Chinese HTTP server docs now mention HTTP_QUERY and that it may carry a request body when registered with .method = HTTP_QUERY.

An esp_http_server integration test sends QUERY /search with Content-Length and JSON body, checks http_method_str(HTTP_QUERY), handler dispatch, body echo, and HTTP 200. Minor comment typo fixes in http_parser.c are included.

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[CLAassistant]

All committers have signed the CLA.

[EyJunge1]

Implements / tracks feature request: #19072

Related Async issue: ESP32Async/ESPAsyncWebServer#475
Related Async PR: ESP32Async/ESPAsyncWebServer#474

[Ashish285]

Thanks for raising this PR and adding in the support, I only have some minor comments

[Ashish285]

LGTM!

[Ashish285]

sha=4fb3dd1afce5bb705828e88b8bb41f52e44cb2e0