Config: Add title environment variable for html title tag

[ValentinFutterer]

Description

Config

What does this PR do?

Add a title environment variable, that sets the html title tag in index.html dynamically using the angular title service.

Checks

• [ ] Summary updated
• [ ] Version view updated
• [ ] Documentation added
• [ ] Tests added
• [ ] E2e tests created
• [ ] Successfully ran e2e tests before merge

closes GH-355

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
75.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud