feat: add opencode-dingtalk-notify plugin to web ecosystem

[faywong]

What does this PR do?

Fixs #12638, Add DingTalk notify support to OpenCode so as to ease the mobile life today.

DingTalk is used by 700 million people for work and study, and covers platforms such as Windows/Macos/Linux/Harmonyos/XR OS/Windows Accessibility.

How did you verify your code works?

I verified it with my DingTak account and a real group chat(dingtalk chat robot included) and worked as expected.

[github-actions]

Hey! Your PR title Add opencode-dingtalk-notify plugin to web ecosystem doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

No duplicate PRs found

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.