Improve UI scaling for 4k displays

[LordChunk]

Converted all pixel units to rem. Also added logic in main.css for scaling the root font size for higher resolution displays.

Fixes: https://github.com/overextended/ox_lib/issues/669

[LukeWasTakenn]

Thank you so much for the PR!

I'll give it a proper review over the weekend.

[LordChunk]

@LukeWasTakenn a question regarding the GitHub Actions pipelines. I tried running a build using the Node and pnpm versions you're currently using to build ox_lib. These currently fail because I updated the lockfile using a more up to date version of pnpm (v10).

I can make another PR to update the release scripting to Node 22 + pnpm 10, but that might mean you also need to upgrade the server version requirement to build /server:12913 to use Node 22 server side. The other option is that I simply remove the lockfile changes from the PR.

[LukeWasTakenn]

Let's avoid bumping the node version, for now at least. Though you should still be able to use pnpm 10, should build fine after it generates an updated lock file...?

[LordChunk]

The latest version of pnpm that's compatible with Node v16 is pnpm v8. https://pnpm.io/installation#compatibility

I did some extra digging and it seems to be related to one of the patches which are run when installing dependencies:

[Release/Build and Create Tagged Release] ⭐ Run Main Install dependencies
[Release/Build and Create Tagged Release]   🐳  docker exec cmd=[bash -e /var/run/act/workflow/5] user= workdir=web
|  WARN  Ignoring not compatible lockfile at /workspaces/ox_lib/web/pnpm-lock.yaml
| Progress: resolved 1, reused 0, downloaded 0, added 0
|  WARN  deprecated [email protected]: Rimraf versions prior to v4 are no longer supported
| Progress: resolved 36, reused 0, downloaded 30, added 0
| Progress: resolved 145, reused 0, downloaded 128, added 0
|  ERR_PNPM_PATCH_NOT_APPLIED  The following patches were not applied: [email protected]
| 
| Either remove them from "patchedDependencies" or update them to match packages in your dependencies.
[Release/Build and Create Tagged Release]   ❌  Failure - Main Install dependencies [3.524802643s]
[Release/Build and Create Tagged Release] exitcode '1': failure

I've also tried running this on the master branch and it throws the same error.

[LordChunk]

@LukeWasTakenn did you manage to test this PR?

[LukeWasTakenn]

no, the state of the project is up in the air right now.

[LordChunk]

Ah okay 😅, I'll leave this as is for now. Should you need any more assistance with maintaining Overextended, feel free to reach out on Discord (lord_chunk)