WIP: feat: upgrade to angular 19 with small improvements

[the-ult]

Upgrade the repo to Angular 19 and improve some code according to new standards

• Upgrade angular to v18 v19
• upgrade dependencies
• replace TSlint with ESLint
  • This is just the simple migration, no extra ESLint plugins or strictness added -> should be separate PR
• Improve/adjust docs
• Migrate to signals
• Add tests

probably as separate issue:

• upgrade tabler/icons to v3.x ??

fixes #141

[the-ult]

@pierreavn or @janschab would you like to review the changes?

[the-ult]

@janschab

Is there anything which needs to be done before it can be merged?

Since Angular 19 has been released today, I could also update the repo to Angular 19

[janschab]

@the-ult I’d like this to be merged as well, but I don’t have write access. It would be awesome if you could update it to 19 as well.

[the-ult]

Then I will update the PR in the next days

[apollisa]

Thanks so much for this @the-ult!

[xylplm]

Thank you for upgrading to Angualr 19. I hope the author can merge the PR as soon as possible。@pierreavn @janschab

[xylplm]

@the-ult I feel that the original author may no longer maintain the library, as it has been inactive for 8 months. Suggest the expert fork a new library and publish it on npm. We are all using the new library of experts.

[the-ult]

I'm gonna add some tests first (next few days.. gotta find/make some time)

I think before forking this, might be better to help this official PR another time:

• icons-angular package tabler/tabler-icons#1091

[xylplm]

I'm gonna add some tests first (next few days.. gotta find/make some time)

I think before forking this, might be better to help this official PR another time:

• icons-angular package tabler/tabler-icons#1091

Thank you. Looking forward to official support! This way, we won't be afraid of relying on outdated packages

[pierreavn]

Hi @the-ult and @xylplm, first of all thank you for the work.
I had a long off time due to a lot of things, but I'm back and ready to review your code :)
I keep you in touch very soon, just the time to review code.

[pierreavn]

Everything looks good to me, I've just saw 2 comments with suggestions.
When you apply them, I'll merge your PR.
Again, thank you a lot for your great work.

After that, I'll do another MR to upgrade Tabler icons to v3.22.0

[pierreavn]

I've directly merged your PR and made the requested changes.
Everything is on master: Angular 18 & 19 support and latest Tabler Icons version 3.22.0 🎊 (just mentioned your contribution in the README).
Can you check everything is working on your side @the-ult @xylplm before I publish the package to npm?

[the-ult]

Thanks a lot @pierreavn 👍

Will try and add the tests in an additional PR