Adding types to mxgraph.

[aasimkhan30]

This PR integrates typings from typed-mxgraph(https://github.com/typed-mxgraph/typed-mxgraph) and updates the development workflow to better support TypeScript in the project.

Changes in this PR:

1. Type Definitions:

   • Added all mxgraph types to src/ts/mxtypings.

2. Project Structure:

   • TypeScript source files will now be in src/ts/.
   • The original mxgraph code remains in src/js/.

3. Recompiling Workflow:

   • After making changes to any code in src/js (original mx source), run yarn compile-mxgraph to compile mxgraph and update the typings in src/ts/mxtypings.

4. Bundling:

   • Added esbuild to bundle everything into a single file, ensuring compatibility with simple HTML examples.

5. Examples:

   • New TypeScript examples are now located in the examples-ts folder.

6. Updated Documentation:

   • The readme has been updated to include linting information and the new workflow.

Copilot reviewed 165 out of 171 changed files in this pull request and generated no suggestions.

Files not reviewed (6)

• .npmignore: Language not supported
• index.html: Language not supported
• package.json: Language not supported
• .github/workflows/cd.yml: Evaluated as low risk
• README.md: Evaluated as low risk
• .github/workflows/ci.yml: Evaluated as low risk

Comments skipped due to low confidence (1)

build.js:94

• The error handling in the prependText function should be improved. The fs.close method should handle errors properly.

fs.close(fd, (err) => {

[kburtram]

Thanks for adding these!