Moved @types/http-cache-semantics to dependencies

[Maxim-Mazurok]

Fixes #194

It looks like it's not a dev-only dependency as it prevents pendants from using this project, so I think that the move is justified.

Tested using npm link, it works and solves my problem.

Please check if the PR fulfills these requirements

• [x] Followed the Contributing guidelines.
• [x] Tests for the changes have been added (for bug fixes/features) with 100% code coverage.
• [x] Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Bug fix