[Epic] list all the manual changes in mongocluster generation

[kazrael2119]

manully changes for https://github.com/Azure/azure-sdk-for-js/pull/30102

1. before generate code, add

@@clientName(Microsoft.DocumentDB,
  "MongoClusterManagementClient",
  "javascript"
);

in client .tsp

add

"@azure-tools/typespec-ts":
    azureSdkForJs: true
    isModularLibrary: true
    generateMetadata: true
    hierarchyClient: false
    experimentalExtensibleEnums: true
    package-name: "@azure/arm-mongocluster"
    flavor: "azure"
    packageDetails:
      name: "@azure/arm-mongocluster"
      description: "DocumentDB MongoCluster Service"

in tspconfig.yaml 2. update the recordedClient.ts 3. set timeout in vitest.browser.config.ts and vitest.browser.ts 4. add LICENSE file 5. use changelog-tool to generate changelog 6. update readme.md 7. update ClientOptions to ClientOptionalParams manually 8. update the sdk-type to mgmt in package.json 9. update the version to1.0.0-beta.1 after generate the changelog

### Tasks
- [ ] https://github.com/Azure/autorest.typescript/issues/2639
- [ ] https://github.com/Azure/autorest.typescript/issues/2640
- [ ] https://github.com/Azure/autorest.typescript/issues/2641
- [ ] https://github.com/Azure/autorest.typescript/issues/2642
- [ ] https://github.com/Azure/autorest.typescript/issues/2637
- [ ] https://github.com/Azure/autorest.typescript/issues/2633
- [ ] https://github.com/Azure/autorest.typescript/issues/2644
- [ ] https://github.com/Azure/azure-sdk-tools/issues/8522