highlight: use custom dark theme

Author: jo3-l

assets/scss/common/_custom.scss

@@ -35,7 +35,7 @@ code:not(pre > code) {
 
 pre.shiki {
   padding: 1.25rem 1.25rem;
-  border: 1px solid color-mix(in srgb, var(--sl-color-gray-5), transparent 25%);
+  border: 0.75px solid color-mix(in srgb, var(--sl-color-gray-5), transparent 25%);
 }
 
 // Make Shiki syntax highlighting theme-aware.

scripts/THIRD_PARTY_LICENSES

@@ -0,0 +1,57 @@
+# yagpdb-cc-ext
+
+The TextMate language definition for YAGPDB templates in yag.tmLanguage.json is adapted
+from https://github.com/Ranger-4297/yagpdb-cc-ext. Its license is reproduced below.
+
+---
+
+MIT License
+
+Copyright (c) 2023 Rhyker Wells
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+# github-vscode-theme
+
+The modified GitHub Dark theme in github-dark-modified.json is adapted from
+https://github.com/primer/github-vscode-theme. Its license is reproduced below:
+
+---
+
+MIT License
+
+Copyright (c) 2020 Primer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.