Added beamershow to Top-Nav and it's own sidebar

closes #6

src/.vuepress/config.js

@@ -46,6 +46,10 @@ module.exports = {
             text: 'Scannerstationen',
             link: '/scanstations/'
           },
+          {
+            text: 'Beamershow',
+            link: '/beamershow/'
+          },
           {
             text: 'Source Code',
             link: 'https://git.odit.services/lfk'
@@ -108,6 +112,16 @@ module.exports = {
               ]
             }
           ],
+          '/beamershow/': [
+            {
+              title: 'Beamershow Dokumentation',
+              collapsable: false,
+              children: [
+                '',
+                'config'
+              ]
+            }
+          ],
         }
       },
       '/en/': {