refactor(http): rename HTTP client files and update struct names for consistency

Signed-off-by: Deluan <deluan@navidrome.org>

plugins/host/http.go

@@ -0,0 +1,40 @@
+package host
+
+import "context"
+
+// HTTPRequest represents an outbound HTTP request from a plugin.
+type HTTPRequest struct {
+	Method    string            `json:"method"`
+	URL       string            `json:"url"`
+	Headers   map[string]string `json:"headers,omitempty"`
+	Body      []byte            `json:"body,omitempty"`
+	TimeoutMs int32             `json:"timeoutMs,omitempty"`
+}
+
+// HTTPResponse represents the response from an outbound HTTP request.
+type HTTPResponse struct {
+	StatusCode int32             `json:"statusCode"`
+	Headers    map[string]string `json:"headers,omitempty"`
+	Body       []byte            `json:"body,omitempty"`
+}
+
+// HTTPService provides outbound HTTP request capabilities for plugins.
+//
+// This service allows plugins to make HTTP requests to external services.
+// Requests are validated against the plugin's declared requiredHosts patterns
+// from the http permission in the manifest. Redirects are followed but each
+// redirect destination is also validated against the allowed hosts.
+//
+//nd:hostservice name=HTTP permission=http
+type HTTPService interface {
+	// Send executes an HTTP request and returns the response.
+	//
+	// Parameters:
+	//   - request: The HTTP request to execute, including method, URL, headers, body, and timeout
+	//
+	// Returns the HTTP response with status code, headers, and body.
+	// Network errors, timeouts, and permission failures are returned as Go errors.
+	// Successful HTTP calls (including 4xx/5xx status codes) return a non-nil response with nil error.
+	//nd:hostfunc
+	Send(ctx context.Context, request HTTPRequest) (*HTTPResponse, error)
+}