refactor: Move comment panel to workbench sidebar

[oltionchampari]

Closes https://github.com/datavisyn/reprovisyn/issues/435 see also https://github.com/datavisyn/reprovisyn/pull/502

Developer Checklist (Definition of Done)

• [x] Descriptive title for this pull request provided (will be used for release notes later)
• [ ] All acceptance criteria from the issue are met
• [ ] Branch is up-to-date with the branch to be merged with, i.e., develop
• [x] Code is cleaned up and formatted
• [ ] Code documentation written
• [ ] Unit tests written
• [x] Tested in Chrome
• [ ] Tested in Firefox
• [x] Build is successful
• [x] Summary of changes written
• [ ] Wiki documentation written
• [x] Assign at least one reviewer
• [x] Assign at least one assignee
• [x] Add type label (e.g., bug, enhancement) to this pull request
• [x] Add next version label (e.g., next-version: minor) to this PR following semver

Summary of changes

• Added the comment button to the utils sidebar
• The comment pane has more width then the rest of the panes( this was agreed with @dvchristianbors ) and could be discussed further in the future
• Now it is possible to have more than on comment panel open since the utils sidebar can be opened on multiple workbenches (the only downside is that if the user comments on one comment pane, then the other will also update, we can decide in the future if we allow this or not)
• Did an npm run clean so there is quite a few dist folder changes

Screenshots