Add Symfony HttpClient support for loading JSON from URL

[sonnymilton]

Adds a new way to load remote JSON using Symfony HttpClient.

What’s included

• New method Block::fromHttpJsonUrl(string $jsonUrl, HttpClientInterface $client, array $options = []): self
  • Allows passing Symfony request options (headers, auth, timeouts, etc.)
  • Returns an empty Block when the response body is empty
• README updated
• New feature test verifying remote JSON loading via HttpClient::create()
• Dependencies
  • require: symfony/http-client-contracts:^3.4.4 (for HttpClientInterface)
  • suggest: symfony/http-client as a concrete implementation
  • require-dev: symfony/http-client:^7.4 for tests

Why

fromJsonUrl() relies on PHP stream functions (e.g. file_get_contents()), which may be restricted (for example allow_url_fopen=0) and provides less control over request configuration. This PR enables a first-class alternative using Symfony HttpClient.

Related

Refs / fixes #49

[roberto-butti]

wow, thank you @sonnymilton for the PR. I will take a look !
Thank you