LibWeb: Move Fetch infra into the Web::Fetch::Infrastructure namespace

The Fetch spec unfortunately will cause a name clash between the Request
concept and the Request JS object - both cannot live in the Web::Fetch
namespace, and WrapperGenerator generally assumes `Web::<Name>` for
things living in the `<Name>/` subdirectory, so let's instead move infra
code into its own namespace - it already sits in a (sub-)subdirectory
anyway.

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp

@@ -6,7 +6,7 @@
 
 #include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 Body::Body(ReadableStreamDummy stream)
     : m_stream(stream)

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.h

@@ -13,7 +13,7 @@
 #include <AK/Variant.h>
 #include <LibWeb/FileAPI/Blob.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-body
 class Body final {

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.cpp

@@ -16,7 +16,7 @@
 #include <LibWeb/Infra/ByteSequences.h>
 #include <LibWeb/MimeSniff/MimeType.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 template<typename T>
 requires(IsSameIgnoringCV<T, u8>) struct CaseInsensitiveBytesTraits : public Traits<Span<T>> {

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Headers.h

@@ -14,7 +14,7 @@
 #include <AK/String.h>
 #include <AK/Vector.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-header
 // A header is a tuple that consists of a name (a header name) and value (a header value).

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.cpp

@@ -11,7 +11,7 @@
 #include <LibWeb/Fetch/Infrastructure/HTTP/Methods.h>
 #include <LibWeb/Infra/ByteSequences.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-method
 bool is_method(ReadonlyBytes method)

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Methods.h

@@ -8,7 +8,7 @@
 
 #include <AK/Forward.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 [[nodiscard]] bool is_method(ReadonlyBytes);
 [[nodiscard]] bool is_cors_safelisted_method(ReadonlyBytes);

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.cpp

@@ -7,7 +7,7 @@
 #include <AK/Array.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-request-url
 AK::URL const& Request::url() const

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Requests.h

@@ -20,7 +20,7 @@
 #include <LibWeb/HTML/PolicyContainers.h>
 #include <LibWeb/HTML/Scripting/Environments.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-request
 class Request final {

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp

@@ -6,7 +6,7 @@
 
 #include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#ref-for-concept-network-error%E2%91%A3
 // A network error is a response whose status is always 0, status message is always

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.h

@@ -16,7 +16,7 @@
 #include <LibWeb/Fetch/Infrastructure/HTTP/Headers.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Statuses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-response
 class Response {

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.cpp

@@ -8,7 +8,7 @@
 #include <AK/Array.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Statuses.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#null-body-status
 bool is_null_body_status(Status status)

Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Statuses.h

@@ -8,7 +8,7 @@
 
 #include <AK/Forward.h>
 
-namespace Web::Fetch {
+namespace Web::Fetch::Infrastructure {
 
 // https://fetch.spec.whatwg.org/#concept-status
 // A status is an integer in the range 0 to 999, inclusive.