Build a feature for a site that allows users to draw diagrams with basic functionality (such as drawing freehand, constructing lines, basic shapes, textboxes)

Hello freelancers,

I am in the process of assessing whether a business idea is feasible. A major feature of this idea involves building a webapp that allows users to construct basic diagrams. The user will press a button on a site which will launch a canvas on *part* of the page, allowing users to draw on that part of the page. There will be other elements on the page; the canvas should be embedded into part of the page only. Basic tools are needed, limited to:
- Freehand drawing of lines following the mouse cursor
- Construction of basic shapes such as straight lines and ellipses similar to what is found in MSPaint
- Construction of text boxes, ability to edit text size and move text boxes
- Configuring line colour, thickness
- Undo/Redo functionality
- Eraser
This site is similar to what I require, although it has many more features that I do not require. The basic functionality is similar: https://jspaint.app/.

The webapp is only required to work on desktop, no mobile compatibility is required. Compatibility with drawing tablets should be implemented. Once the drawing is complete, the drawing should be saved to a server for later retrieval.

I am interested in if you can complete this project. I want to see examples of any previous work you have done similar to what I require, if possible. As I am assessing feasibility, if you are awawrded the task, it will not be required to be completed until months down the line.

Thank you for your attention.