Build a Web Gantt module with dhtmlx Gantt, using HTML/ CSS/ Javascript

Using dhtmlxGantt Standard Edition
https://dhtmlx.com/docs/products/dhtmlxGantt/download.shtml

There are usage examples provided in the download package. This project is aiming to combine features from multiple examples into one, as a standalone gantt module.

* UI style is irrelevant, can just use default from examples

The standalone gantt module should include the following features, the index indicate the corresponding examples from dhtmlx plugin samples,

01. Initialization
- 02 Loading data from JSON
- 13 Project duration

02. Extensions
- 16 Keyboard navigation
- 18 Linked tasks
- 27 Drag timeline
- 24 Click drag

03. Scales
- 05 Dynamic scales
- 11 Select column
- 12 Scale change: Year/ quarters/ month/ week
- 13 Zoom to fit

04. Customization
- 06 Highlight weekend
- 07 Progress text

06. Skins
- 06/ 09 Using Material theme

07. Grid
- 01 Builtin sorting
- 02 Branch ordering
- 09 WBS column
- 10 Scrollable grid
- 11 Inline editing
- 12 Inline edit key navigation
- 14 Branch ordering highlight

08. API
- 06 Export
- 22 Data processor

11. Resources
- 01 Assigning resources
- 06 Assign multiple owners