feat: todo block

[Moon-DaeSeung]

Description of Changes

Here is reference: #25

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support 'custom your created block' block

add todo block

Review point

could this component be more sementic? (regarding tag and aria-attribute)

To reproduce

• npm run story:start
• click 'your created block' on the Storybook left side panel

Screenshot

Review Guide

Reviews are conducted based on priority levels, such as p0, p1, p2, p3, p4, and p5.
p0 ~ p2: If the author decides not to reflect a review for p0 to p2, it signals that a proper discussion with the reviewer is
necessary. It is expected that the review will be resolved either through incorporating the feedback or through further discussion.
p3: indicates that the reviewer has identified a significant issue, but either lacks a clear solution or the comment lacks sufficient context. Further explanation or additional discussion on the reviewer's concerns is needed.
p4, p5: p4 and p5 suggest low priority, and if the author does not deem them important, these comments can be disregarded.

[jiji-hoon96]

I tried working on #39
If I knew what you did first... I would have done something different... Too bad!
To avoid this kind of confusion, why don't we make a list of what needs to be done in an issue and synchronize it?
I checked out your component and it extends Todo for child elements as well... great idea!

[Moon-DaeSeung]

@jiji-hoon96

Thank you for your contribution and the effort you've put into this PR! I really appreciate your work.

I apologize for the confusion. I had actually been working on a similar implementation and had just submitted a PR for it. This situation highlights an important point about our project communication.

To avoid such overlaps in the future and to better synchronize our efforts, we're planning to implement a new system for sharing ongoing work and intentions. We'll be using an approach similar to the one described in this issue: Nextjs-kr/Nextjs.kr#1

This will help us all stay informed about what others are working on and allow for better coordination.

Regarding this PR, while it would typically be fair to merge the PR that came in first, in this case, I'll withdraw my PR and we'll proceed with yours. I noticed you extended the Todo component for child elements as well - that's a great idea!

Thank you again for your contribution and your patience as we work to improve our collaboration processes. Your input and ideas are valuable to this project, and I look forward to more of your contributions in the future!