1015395: Grouping

[farveensulthana]

Added PR for the following features.

1. Grouping -> Caption template, LazyLoading
2. Selection -> CellSelection, RowSelection, Checkbox selection
3. Scrolling -> Virtual and Infinite Scrolling

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: 1015395-Grouping

[SyncfusionBuild]

CI Status: FAILURE ❌
Source Compilation: SUCCESS ✅
Failure Reason: CI Failure with violation
Build Location: 1015395-Grouping
Technical Error(s): 0
Spelling Error(s): 1
Image Alt Text Error(s): 0
Image Size Error(s): 3
Image Name Error(s): 0
Front matter Error(s): 3
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

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: 1015395-Grouping

[SyncfusionBuild]

CI Status: FAILURE ❌
Source Compilation: SUCCESS ✅
Failure Reason: CI Failure with violation
Build Location: 1015395-Grouping
Technical Error(s): 0
Spelling Error(s): 0
Image Alt Text Error(s): 0
Image Size Error(s): 3
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