refactor(*): remove language service where used to translate a message

[pelord]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines:https://github.com/infra-geo-ouverte/igo2/blob/master/.github/CONTRIBUTING.md#git-commit-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What is the current behavior? (You can also link to an open issue here)
Message content was translated before being sent to message service. Although, message service is also doing a translation...

What is the new behavior?
Remove pre-translation for message sent to message-service. This refactor allow messages to be translated live.

Ex, a message with a undefined duration was not translated IF the browser's language is changed.
Now, if message-service get a translation key instead of a translated message, the message will be transated if the language is changed....

Plus, allow to remove a lot of language service from each component, this is a attempt to fix #1004

Related to :
#1004
#1110

@ameliebernier Major refactor need to be reviewed
@gignacnic Check this specific file (packages/geo/src/lib/map/shared/mapOffline.directive.ts) , I had to slightly change this part of the code....

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications:

Other information:

[pelord]