New: Darkmode

* New: Native Theme Engine

Co-Authored-By: Zak Saunders <thezak48@users.noreply.github.com>
(cherry picked from commit 2291f3e00eb2ff9268a0b2f49da8dde82ee13c04)

* Update CSS for themes

* Fixup CSS values

* Fixup remove duped Color-Impaired setting

* Fixup Link Colors

Co-Authored-By: Qstick <qstick@gmail.com>

frontend/src/Components/Table/Cells/TableRowCell.css

@@ -1,6 +1,6 @@
 .cell {
   padding: 8px;
-  border-top: 1px solid #eee;
+  border-top: 1px solid var(--borderColor);
   line-height: 1.52857143;
 }
 

frontend/src/Components/Table/TableOptions/TableOptionsColumn.css

@@ -4,7 +4,7 @@
   width: 100%;
   border: 1px solid #aaa;
   border-radius: 4px;
-  background: #fafafa;
+  background: var(--inputBackgroundColor);
 }
 
 .checkContainer {

frontend/src/Components/Table/TablePager.css

@@ -46,11 +46,11 @@
 }
 
 .records {
-  color: $disabledColor;
+  color: var(--disabledColor);
 }
 
 .disabledPageButton {
-  color: $disabledColor;
+  color: var(--disabledColor);
 }
 
 .pageSelect {

frontend/src/Components/Table/TableRow.css

@@ -2,6 +2,6 @@
   transition: background-color 500ms;
 
   &:hover {
-    background-color: $tableRowHoverBackgroundColor;
+    background-color: var(--tableRowHoverBackgroundColor);
   }
 }

frontend/src/Components/Table/VirtualTableRow.css

@@ -3,7 +3,7 @@
   transition: background-color 500ms;
 
   &:hover {
-    background-color: #fafbfc;
+    background-color: var(--tableRowHoverBackgroundColor);
   }
 }