feat: paginator factory

[kuhe]

Creates a paginator template function to reduce generated code of paginators.

The type returned by the paginator factory is identical to the pre-existing pagination functions. ✅

sample diff: aws/aws-sdk-js-v3#5590

before

import { ListFunctionsCommand, } from "../commands/ListFunctionsCommand";
import { LambdaClient } from "../LambdaClient";
const makePagedClientRequest = async (client, input, ...args) => {
    return await client.send(new ListFunctionsCommand(input), ...args);
};
export async function* paginateListFunctions(config, input, ...additionalArguments) {
    let token = config.startingToken || undefined;
    let hasNext = true;
    let page;
    while (hasNext) {
        input.Marker = token;
        input["MaxItems"] = config.pageSize;
        if (config.client instanceof LambdaClient) {
            page = await makePagedClientRequest(config.client, input, ...additionalArguments);
        }
        else {
            throw new Error("Invalid client, expected Lambda | LambdaClient");
        }
        yield page;
        const prevToken = token;
        token = page.NextMarker;
        hasNext = !!(token && (!config.stopOnSameToken || token !== prevToken));
    }
    return undefined;
}

after

import { createPaginator } from "@smithy/core";
import { ListFunctionsCommand, } from "../commands/ListFunctionsCommand";
import { LambdaClient } from "../LambdaClient";
export const paginateListFunctions = 
  createPaginator(LambdaClient, ListFunctionsCommand, "Marker", "NextMarker", "MaxItems");