Load services.yml automatically

[cored0wn]

Let the services.yml load automatically instead of configuring them in the project specific services.yml

See https://symfony.com/doc/current/bundles/extension.html

[cored0wn]

Updated README.md so the services wouldn't be defined twice 😉

[cored0wn]

Added support for multipart/form-data subrequest.

You can now start request like this

POST /batch HTTP/1.1
Host: example.com
content-type: multipart/batch; type="application/http;version=1.1"; boundary=batch

--batch
Content-Type: application/http;version=1.1
Content-Transfer-Encoding: binary
Content-ID: <abcd-1234@example.org>

POST /oauth2/token HTTP/1.1
Host: example.com
content-type: multipart/form-data; boundary=--form1

----form1
Content-Disposition: form-data; name="grant_type"

refresh_token
----form1
Content-Disposition: form-data; name="refresh_token"

44b66d4b02b5c47b5c003e2d5bd443c83157bf445f4f151dbc6979d69e32e2ff9e4e8eefd176ce10d49aac
----form1--
--batch
Content-Type: application/http;version=1.1
Content-Transfer-Encoding: binary
Content-ID: <zyxw-9876@example.org>

POST /oauth2/introspect HTTP/1.1
Host: example.com
content-type: multipart/form-data; boundary=--form2

----form2
Content-Disposition: form-data; name="token"

fe73b260e105b6ce99ec0638bc2f3e76e5241faff8c5588588c27f8944aaa832128233992b4b306dcb3146
----form2--
--batch--

[cored0wn]

I have added some features, e.g. the possibility to limit the number of calls via the configuration.
I also changed the HttpHeaderException to the Symfony BadRequestHttpException, so you don't need ext-http anymore.