#6511 : Update Editor Component UI - Toolbar Links, Code, and Blockquotes

[Miaplacidus]

This PR updates the toolbar icons for creating blockquotes, links, and codeblocks in the editor.

Note that the editor is still being worked on, so will still have elements that are updated in other cards.

Link to Issue

Closes: #6511

Description of Changes

• updates the icons used for blockquotes, links, and codeblocks

Test Plan

• go to the create thread page
• confirm expected behavior and style for the aforementioned icons

[masvelio]

1. similarly to other issues, when you use code icon, the cursor lands after the inserted code, instead in the middle
   

2. is this what product team expects to happen after clicking link icon?
   

[Miaplacidus]

@masvelio
The handing of cursor placement for all editor cards is left to #6614 and other cursor placement-related cards.
Since that is the current functionality of the link button and they have not specified otherwise, I would say so. If they want to update that functionality further, that's going to need to be in a different ticket and PR.

@zakhap @jessmart1213

[Israellund]

LGTM