[#2001] Extract c-zoom-commit-message component from views/c-zoom

[sopa301]

Part of #2001.

Proposed commit message

Many of the frontend files are difficult to navigate through due to the
large file sizes. As we add more features to the frontend, it is
getting harder to maintain. This is also very unfriendly towards new
contributors. 

Let us break down frontend files in a logical manner, continuing with
extracting c-zoom-commit-message from views/c-zoom.

Other information