[feature] SPs [Pictique] (Client): Comments Pane

[sosweetham]

Description

would have same infinite scroll as #160

The backend would always return a flat array of comments

structure should look like

{
    commentId: comment_id,
    replyTo: comment_id | null
    message: string
}

if the parent comment id exists, it's going to be a child under an accordion of the comment with that id

otherwise it will be a top level comment

only render top level comments initially, child comments will be fetched and loaded if the user clicks on the comment to see the replies

Reference

reddit comments

code:
https://github.com/sveltejs/sites/blob/master/sites/hn.svelte.dev/src/routes/item/%5Bid%5D/Comment.svelte
https://github.com/NatoBoram/Leanish/blob/main/src/lib/comments/comment_tree.ts

Acceptance Criteria

Comments loaded as defined, look like design