Merge pull request #80 from maiermic/upgrade_angular

update peerDependencies of library to Angular 16

update lockfileVersion of library from 1 to 2

npx ng update @angular/core@16 @angular/cli@16

fix: Can't find stylesheet to import

npx ng update @angular/core@15 @angular/cli@15

npx ng update @angular/core@14 @angular/cli@14

fix: import of photoswipe causes error at runtime

npx ng update --force @angular/core@13 @angular/cli@13

re-create package-lock.json

fix: karma-jasmine-html-reporter@1.7.0 requires jasmine-core@">=3.8"

npx ng update --force @angular/core@12 @angular/cli@12

npx ng update @angular/core@11 @angular/cli@11

npm install @angular-devkit/core --save-dev

update package-lock.json by running `npm install` with NPM 8.19.4 (Node.js 16)