Make URI cells clickable

[seancolsen]

Reproduce

1. "New Table" > "Import Data" > "Copy and Paste Text" > paste the following

   project,repo
   Mathesar,https://github.com/centerofci/mathesar
   

2. Load the table

3. Expect to find a way to click on the URL in the cell and load the page in my browser

4. Observe the URL is not clickable

Specs

• The overall behavior should be similar to AirTable, as in this example:

  

• The URL should only be clickable when the cell is selected

• Only the text itself should be clickable -- not the padding around it. I should still be able to click in the cell but below the text. This way I can enter edit mode via double click, even with the cell is selected (if I double click within the padding).

• The URL should be underlined while viewing, but not while editing.

• The text color should be black when the link is not clickable and blue when the link is clickable.

• Clicking on the link should open the page in a new tab