add bookmark button to thread and posts in thread view

data/static/css/theme-peachy.css

@@ -99,6 +99,12 @@ a:visited {
   font-weight: bold;
 }
 
+.thread-actions {
+  display: flex;
+  align-items: center;
+  gap: 3px;
+}
+
 .post {
   display: grid;
   grid-template-columns: 200px 1fr;
@@ -891,6 +897,9 @@ input[type=text]:focus, input[type=password]:focus, textarea:focus, select:focus
   justify-content: center;
   flex-direction: column;
 }
+.contain-svg.inline {
+  display: inline-flex;
+}
 
 .post-img-container {
   display: flex;