viewer: migrate to vue 3, general refactoring and cleanup

Non-exhaustive list of fixes and improvements done at the same time:

- html default background to grey (avoids white flash during init)
- unified links behavior
- added more theme variables
- removed the flex-expand transition (it wasn't working) and replaced it
  with a slide
- fixed LdLoading not centered on the content
- title on removable tags
- fixed an issue with encoded URI from vue-router
- unified Item resource URLs
- removed the iframe for PlainTextViewer (it wasn't working properly)
  and replaced it with a pre
- fixed clear and search buttons tabindex
- fixed the information panel bumping up during the fade animation of
  tag's dropdown
- fixed some focus outlines not appearing correctly
- moved CSS variables to the :root context
- Code cleaning

GitHub: closes #217
GitHub: closes #300
GitHub: closes #297
GitHub: closes #105
GitHub: closes #267
GitHub: closes #275
GitHub: closes #228
GitHub: closes #215
GitHub: closes #112

1 files changed, 22 insertions, 0 deletions

diff --git a/viewer/viewer.code-workspace b/viewer/viewer.code-workspace
new file mode 100644
index 0000000..7fafd49
--- /dev/null
+++ b/viewer/viewer.code-workspace
@@ -0,0 +1,22 @@
+{
+  "folders": [
+    {
+      "path": "."
+    }
+  ],
+    "settings": {
+    "editor.tabSize": 2,
+    "editor.wordBasedSuggestions": false,
+    "editor.detectIndentation": false,
+    "editor.formatOnSave": false,
+    "eslint.format.enable": true,
+    "editor.codeActionsOnSave": {
+      "source.fixAll.eslint": true,
+    },
+    "javascript.format.semicolons": "insert",
+    "i18n-ally.localesPaths": [
+      "src/locales"
+    ],
+    "i18n-ally.keystyle": "nested",
+  }
+}