Infrastructure: fix clang-tidy static analyser build

[vadi2]

Brief overview of PR changes/additions

Install gettext for vcpkg like we do in the main build-mudlet.yml workflow, otherwise it fails without it: https://github.com/Mudlet/Mudlet/runs/7637079471?check_suite_focus=true#step:9:236

Motivation for adding to Mudlet

So clang-tidy static analysis can work

Other info (issues closed, discussion etc)

Moved installation of dependencies above the vcpkg step - hopefully that is not an issue

[add-deployment-links[bot]]

Hey there! Thanks for helping Mudlet improve. :star2:

Test versions

You can directly test the changes here:

• linux: https://make.mudlet.org/snapshots/136115/Mudlet-4.16.0-testing-pr6208-94090c39-linux-x64.AppImage.tar
• osx: https://make.mudlet.org/snapshots/6b7e84/Mudlet-4.16.0-testing-pr6208-94090c39.dmg
• windows: https://make.mudlet.org/snapshots/8ec3f1/Mudlet-4.16.0-testing-pr6208-94090c39-windows.zip

No need to install anything - just unzip and run. Let us know if it works well, and if it doesn't, please give details.