feat: Add Admin Groups Management Module

- Introduced a new module for managing user groups (`usrgrp`) in the administration interface.
- Implemented CRUD operations for user groups: list, create, rename, and delete.
- Added authorization checks to ensure only users with appropriate permissions can manage groups.
- Created corresponding frontend JavaScript and SCSS files for the new module.
- Updated documentation to reflect the new group management functionality and its authorization model.
- Added SQL stored procedures for group management operations.
- Established a new login script for database access, ensuring proper security practices.

Fuchs/wwwroot/web/fis.usrgrp.css

@@ -0,0 +1,73 @@
+/*   basics   */
+/*  Color SCHEME */
+/*  #8396bd  */
+/*  #e3e6e6  */
+/*  #ffffff  */
+/*  #262626  */
+/*  #262626  */
+/*  #e3e6e6  */
+/* #FFC801 */
+/* #ffff4a */
+/* media breaks */
+/* other */
+/*  mixin  */
+/*   basics   */
+/*  Color SCHEME */
+/* #1b4379  #0033b3 */
+/*neu: #56a532  ; alt: rgb(32,144,119);*/
+/* 10% sw */
+.ugpfrm {
+  padding: 1.5rem 2rem;
+}
+.ugpfrm .ugp_grid {
+  border: 1px solid #e2e2e2;
+  border-radius: 0.5rem;
+  background: #fff;
+  box-shadow: 0 1px 3px rgba(50, 50, 50, 0.1);
+  overflow: hidden;
+  max-width: 32rem;
+}
+.ugpfrm .ugp_row {
+  display: grid;
+  grid-template-columns: 1fr;
+  align-items: center;
+  padding: 0.55rem 1rem;
+  border-bottom: 1px solid #eee;
+}
+.ugpfrm .ugp_row:last-child {
+  border-bottom: none;
+}
+.ugpfrm .ugp_row_hd {
+  background: rgb(27, 67, 121);
+  color: #fff;
+  font-weight: bold;
+  font-size: 0.85rem;
+  text-transform: uppercase;
+  letter-spacing: 0.02em;
+  padding: 0.5rem 1rem;
+}
+.ugpfrm .ugp_row:not(.ugp_row_hd) {
+  cursor: pointer;
+  transition: background-color 0.12s ease-in-out;
+}
+.ugpfrm .ugp_row:not(.ugp_row_hd):hover {
+  background-color: #f3f6fb;
+}
+.ugpfrm .ugp_row:not(.ugp_row_hd).selected {
+  background-color: rgba(86, 165, 50, 0.12);
+  box-shadow: inset 3px 0 0 rgb(86, 165, 50);
+}
+.ugpfrm .ugp_col_name {
+  font-weight: 600;
+  color: #222;
+}
+.ugpfrm .ugp_empty {
+  padding: 1.5rem 1rem;
+  text-align: center;
+  color: #777;
+}
+.ugpfrm .ugp_err {
+  padding: 1rem 2rem;
+  color: #b00020;
+  font-weight: bold;
+}