documentation(EJ2-889454): Need to move the following sections from How To section to feature section in Spreadsheet UG

[DinakarManickam4212]

Description:

Need to add section 'Import and Export' and move 'import an excel document using file uploader' to it.
Need to move 'How to save and open spreadsheet data as base64 string' to Open and save section.
Need to move 'How to print' to the Worksheet section.
Need to move 'How to get filtered rows ' to Filtering section.
Need to move 'How to sort a range by a custom list' to Sorting section.
Need to move 'How to insert sheet programmatically and make it active sheet' to Worksheet section.

[SyncfusionBuild]

Build Status: INPROGRESS 🔃
Build Location: EJ2-889454-hotfix

[SyncfusionBuild]

CI Status: SUCCESS ✅
Source Compilation: SUCCESS ✅
Build Location: EJ2-889454-hotfix
Image Alt Text Error(s): 0
Image Size Error(s): 0
Image Name Error(s): 0
FT Layout Syntax 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