Update single layer getting started document & images

[EngincanV]

Resolves https://github.com/volosoft/vs-internal/issues/5532

[github-actions]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 30.3%, saving 277.23 KB.

Filename	Before	After	Improvement	Visual comparison
docs/en/get-started/images/abp-studio-no-layers-new-solution-additional-options-0.9.13.png	77.72 KB	54.39 KB	-30.0%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-0.9.13.png	128.64 KB	85.73 KB	-33.4%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-database-configurations-efcore-0.9.13.png	78.64 KB	56.05 KB	-28.7%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-database-configurations-mongo-0.9.13.png	63.27 KB	45.63 KB	-27.9%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-database-provider-efcore-0.9.13.png	104.42 KB	74.57 KB	-28.6%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-database-provider-mongo-0.9.13.png	100.88 KB	72.42 KB	-28.2%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-solution-properties-0.9.13.png	104.82 KB	71.40 KB	-31.9%	View diff
docs/en/get-started/images/abp-studio-no-layers-new-solution-dialog-ui-framework-0.9.13.png	176.73 KB	116.80 KB	-33.9%	View diff
docs/en/get-started/images/abp-studio-nolayers-new-solution-dialog-ui-theme-0.9.13.png	81.00 KB	61.90 KB	-23.6%	View diff

2307 images did not require optimisation.