feat(container-loader): add captureFullContainerState free function

packages/loader/container-loader/api-report/container-loader.legacy.alpha.api.md

@@ -7,6 +7,9 @@
 // @alpha @legacy
 export function asLegacyAlpha(base: IContainer): ContainerAlpha;
 
+// @alpha @legacy
+export function captureFullContainerState(input: ICaptureFullContainerStateProps): Promise<string>;
+
 // @public
 export enum ConnectionState {
     CatchingUp = 1,
@@ -44,6 +47,14 @@ export interface IBaseProtocolHandler {
     snapshot(): IQuorumSnapshot;
 }
 
+// @alpha @legacy
+export interface ICaptureFullContainerStateProps {
+    readonly documentServiceFactory: IDocumentServiceFactory;
+    readonly logger?: ITelemetryBaseLogger | undefined;
+    readonly request: IRequest;
+    readonly urlResolver: IUrlResolver;
+}
+
 // @beta @deprecated @legacy (undocumented)
 export interface ICodeDetailsLoader extends Partial<IProvideFluidCodeDetailsComparer> {
     load(source: IFluidCodeDetails): Promise<IFluidModuleWithDetails>;