Upgraded all libraries, switched to npm, upgraded angular and jdk21

portal_client/src/styles.scss

@@ -0,0 +1,5 @@
+@use '@angular/material' as mat;
+
+html { @include mat.theme((color: (primary: mat.$azure-palette, tertiary: mat.$blue-palette), typography: Arial, density: 0)); }
+html, body { height: 100%; margin: 0; font-family: Arial, sans-serif; background: #f4f6f7; }
+* { box-sizing: border-box; }