💡Use 'text' cursor when there is the only placeholder

[nikmel2803]

1. Describe a problem.
   When placeholder is displaying it is not intuitive that you can click and edit that content because of the cursor is in standard style
   

2. Describe the solution you'd like. Mockups are welcome.
   Make cursor: text for editor block when there is the only placeholder
   

[ranemihir]

@nikmel2803 After testing, I found out that when the cursor is on the placeholder text of the Header tool, it remains in default state which should have been caret. But from what I have observed, the issue only exists with the Header tool itself and I have made PR #1205 fixing the issue. Please check it out and write a review.

Have I misunderstood your issue?

Should the cursor be a caret everywhere for the entire <div id="editorjs"></div>?
Are you talking about that specific block or entire <div id="editorjs"></div>?
Is it related to a specific tool?