838237: show hide taskbar code added

[AjithkumarGopalakrishnan]

Description

How to hide/unhide the gantt tasks bar in gantt chart.

Areas affected and ensured

None

Test cases

NA

Test bed sample location

NA

Additional checklist

• Did you run the automation against your implementation? NA
• Is there any API name change? NA.
• Is there any existing behavior change of other features due to this code change? No
• Does your new code introduce new warnings or binding errors? No
• Does your code pass all FxCop and StyleCop rules? No
• Did you record this case in the unit test or UI test? No

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: 838237-show-hide

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: 838237-show-hide
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name Error(s): 0
Front matter Error(s): 0
File Path Error(s): 0
CodeSnippet File Path Missing Error(s): 0
Toc Anchor Tags Validation Error(s): 0
MD Tag Validation Error(s): 0