[mod] typification of SearXNG: add new result type Paper

This patch adds a new result type: Paper

- Python class:   searx/result_types/paper.py
- Jinja template: searx/templates/simple/result_templates/paper.html
- CSS (less)      client/simple/src/less/result_types/paper.less

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

client/simple/src/less/result_types/paper.less

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+/*
+  Layout of the Paper result class
+*/
+
+.result-paper {
+  .attributes {
+    display: table;
+    border-spacing: 0.125rem;
+
+    div {
+      display: table-row;
+
+      span {
+        font-size: 0.9rem;
+        margin-top: 0.25rem;
+        display: table-cell;
+
+        time {
+          font-size: 0.9rem;
+        }
+      }
+
+      span:first-child {
+        color: var(--color-base-font);
+        min-width: 10rem;
+      }
+
+      span:nth-child(2) {
+        color: var(--color-result-publishdate-font);
+      }
+    }
+  }
+
+  .content {
+    margin-top: 0.25rem;
+  }
+
+  .comments {
+    font-size: 0.9rem;
+    margin: 0.25rem 0 0 0;
+    padding: 0;
+    word-wrap: break-word;
+    line-height: 1.24;
+    font-style: italic;
+  }
+}
+
+@media screen and (max-width: @phone) {
+  .result-paper {
+    .attributes {
+      display: block;
+
+      div {
+        display: block;
+
+        span {
+          display: inline;
+        }
+
+        span:first-child {
+          font-weight: bold;
+        }
+
+        span:nth-child(2) {
+          .ltr-margin-left(0.5rem);
+        }
+      }
+    }
+  }
+}

client/simple/src/less/style.less

@@ -309,11 +309,11 @@ article[data-vim-selected].category-social {
   }
 }
 
-.result-paper,
 .result-packages {
   .attributes {
     display: table;
     border-spacing: 0.125rem;
+    margin-top: 0.3rem;
 
     div {
       display: table-row;
@@ -353,12 +353,6 @@ article[data-vim-selected].category-social {
   }
 }
 
-.result-packages {
-  .attributes {
-    margin-top: 0.3rem;
-  }
-}
-
 .template_group_images {
   display: flex;
   flex-wrap: wrap;
@@ -1118,7 +1112,6 @@ summary.title {
     display: none;
   }
 
-  .result-paper,
   .result-packages {
     .attributes {
       display: block;
@@ -1164,3 +1157,4 @@ pre code {
 
 // import layouts of the Result types
 @import "result_types/keyvalue.less";
+@import "result_types/paper.less";