WangWeiLin-MV 898a927b84
[easyloggingpp] Fix pkgconfig and add usage (#36851)
Fix #36726 

### Changes
* Patch `easyloggingpp/CMakeLists.txt` to change
`ELPP_PKGCONFIG_INSTALL_DIR` from `share/pkgconfig` to `lib/pkgconfig`.
* Patch `easyloggingpp/cmake/easyloggingpp.pc.cmakein` to add `libdir`
and `Libs`
* Add `usage` about `FindPkgConfig` module

### Checklist

- [x] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [ ] SHA512s are updated for each updated download.
- [ ] ~The "supports" clause reflects platforms that may be fixed by
this new version.~
- [ ] Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.
- [ ] Any patches that are no longer applied are deleted from the port's
directory.
- [x] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [x] Only one version is added to each modified port's versions file.

Usage test pass with following triplets:
```
x86-windows
x64-linux
x64-windows
x64-windows-static
```
2024-02-21 09:35:50 -08:00
..
2023-10-02 20:28:06 -07:00
2023-09-28 23:48:50 -07:00
2023-10-31 12:39:05 -07:00
2024-02-07 12:23:48 -08:00
2023-11-29 00:36:40 -08:00
2023-09-28 23:40:24 -07:00
2024-02-05 11:30:19 -08:00
2024-02-14 23:40:51 -08:00
2024-02-12 14:47:50 -08:00
2024-01-24 11:16:46 -08:00