refactor: Improve TypeScript types and remove unused imports

  - Remove unused imports from app.module.ts
  - Replace 'any' with proper types in demo components
  - Change schematic parameters from 'any' to 'unknown'
  - Clean up unused test constants
  - Improve type safety without breaking public API

Author: t-ho

projects/ngx-ui-loader/schematics/update/index.ts

@@ -1,13 +1,13 @@
 import { Rule, SchematicContext, Tree } from '@angular-devkit/schematics';
 
-export function update1000(_options: any): Rule {
+export function update1000(_options: unknown): Rule {
   return (tree: Tree, _context: SchematicContext) => tree;
 }
 
-export function update1100(_options: any): Rule {
+export function update1100(_options: unknown): Rule {
   return (tree: Tree, _context: SchematicContext) => tree;
 }
 
-export function update1300(_options: any): Rule {
+export function update1300(_options: unknown): Rule {
   return (tree: Tree, _context: SchematicContext) => tree;
 }