* feature(billing): add cart-summary component
* tests(billing): add tests for component
* feature(billing): add stories and documentation for storybook
* feature(billing): export component
* fix: add localization and remove null coalescing for PM
* fix: import localization pipe and update story for I18n Service
remove service
* fix(billing): add IconButtonModule and use lineitem name
* fix(billing): Update story props and add Family and Premium examples
* fix(billing): Add examples and table of contents do to docs
* fix(billing): update aria properties
* fix(billing): add figma link and description
* fix(billing): update docs
* fix(billing): remove optional chaining since property is already checked
* fix(billing): Update fonts and button padding
* fix(billing): Update bitIconButton size to small
