feat(word counter): Added word counter
Following points has completed successfully,
- In the bottom right corner, we have created a new Toolbar and included the counters info, shortcuts modal, and help.
- When the user has no text selected the counter will reflect the total words of the chapter.
- On text selection it will show the current selection counter. As the note's content is inline and saved in the annotation when a note is selected its text will be included in the count.
- Clicking the counter, will display the popover that exists in the design, with info for some additional counters. For now, tables, images, footnotes, and block-level nodes are included.
Edited by Deleephan K S