Test(repo): Introduce commands for updating E2E tests

[literat]

refs #DS-1094

Description

Added additional commands to Makefile for updating snapshots and running end-to-end tests.

Additional context

Issue reference

https://jira.lmc.cz/browse/DS-1094

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[github-actions]

coverage: 70.462% (-9.2%) from 79.629%
when pulling b28ead7 on tests/e2e-add-commands
into 8f94f24 on main.

[github-actions]

coverage: 70.462% (-9.2%) from 79.629%
when pulling 68d7111 on tests/e2e-add-commands
into 1906e75 on main.

[coveralls]

coverage: 79.629%. remained the same
when pulling 68d7111 on tests/e2e-add-commands
into 1906e75 on main.