implemented task priorities

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/project/KanbanCard.svelte

@@ -2,7 +2,7 @@
     let { onclick, ondragstart, task } = $props();
 </script>
 
-<div draggable="true" class="box" {onclick} {ondragstart} >
+<div draggable="true" class={`box prio_${task.priority} p${Math.floor(task.priority/10)*10} p${task.priority % 10}`} {onclick} {ondragstart} >
     <span class="title">{task.name}</span>
     {#if task.estimated_time}
     <span class="estimate">

frontend/src/routes/task/View.svelte

@@ -181,7 +181,7 @@
 <span class="error">{error}</span>
 {/if}
 {#if task}
-<div class="task grid2">
+<div class={`task grid2 prio_${task.priority} p${Math.floor(task.priority/10)*10} p${task.priority % 10}`} >
     {#if project}
     <div>{t('project')}</div>
     <div class="project">