refactor: タイムテーブルの計算処理と描画処理を分離し、それぞれの役割を明確化#81

takusandayooo merged 5 commits intoadd-time-table-pagecoderdojo-japan/dojocon2025.coderdojo.jp:add-time-table-pagefrom

refactor-time-table-with-plugincoderdojo-japan/dojocon2025.coderdojo.jp:refactor-time-table-with-pluginCopy head branch name to clipboard