Добавляем возможность PWA для приложения

Name		Name	Last commit message	Last commit date
Latest commit History 18 Commits
e2e		e2e
src		src
.browserslistrc		.browserslistrc
.editorconfig		.editorconfig
.gitignore		.gitignore
README.md		README.md
angular.json		angular.json
karma.conf.js		karma.conf.js
ngsw-config.json		ngsw-config.json
package-lock.json		package-lock.json
package.json		package.json
tsconfig.app.json		tsconfig.app.json
tsconfig.json		tsconfig.json
tsconfig.spec.json		tsconfig.spec.json
tslint.json		tslint.json

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