refactor: improve granular componentization of generator package template

[Bishoywadea]

Description

Refactored the generator package template to improve granular componentization. This change breaks down the monolithic client.js.js file into smaller, reusable components such as ClassDeclaration, ConnectMethod, EventHandlerMethods, HandlerRegistration, UtilityMethods, and ModuleExport. This improves readability, maintainability, and reusability of the template code.

Related Issue(s)

Fixes #1349

[changeset-bot]

⚠️ No Changeset found

Latest commit: f4d6afa

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

Welcome to AsyncAPI. Thanks a lot for creating your first pull request. Please check out our contributors guide useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[sonarqubecloud]

Quality Gate passed

Issues
8 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Bishoywadea]

@derberg any feedback?