[proj] PROJ package sets invalid locaiton for proj.db in debug installation

Describe the bug
PROJ package sets invalid locaiton for proj.db in debug mode. The PROJ_LIB variable (presumably controlled by CMake) is set to a location that doesn't exist in the debug installation of the library,

pj_obj_create: Cannot find proj.db
pj_obj_create: Cannot find proj.db
proj_create_operation_factory_context: Cannot find proj.db
proj_create_operations: source_crs is not a CRS

In filemanager.cpp, theres the lines:

static const char *proj_lib_name =
#ifdef PROJ_LIB
    PROJ_LIB;
#else
    nullptr;
#endif

in my project PROJ_LIB is "/home/user/Documents/projects/vcpkg/packages/proj4_x64-linux/debug/share/proj4", something set during the installation process. The problem with this directory, is that no such directory actually exists, there's only one directory inside:

/home/user/Documents/projects/vcpkg/packages/proj4_x64-linux/debug

and it's lib (which houses the static library). That doesn't mean, however, share and proj.db doesn't exist, it actually does, but in a separate sister directory:

/home/user/Documents/projects/vcpkg/packages/proj4_x64-linux/share/proj4

and in this directory is where proj.db exists.

Environment

• x64-linux, centos 7
• GCC 8, devtoolset 8

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg install proj
2. See error
   Repro code when

#include <proj.h>
int main(){
    auto proj_context = proj_context_create();
    auto proj_example = proj_create(proj_context, "+proj=latlong +ellps=WGS84 +datum=WGS84");
    proj_destroy(proj_example);
    proj_context_destroy(proj_context);
    return 0; 
}

Expected behavior
PROJ_LIB should be set to /home/user/Documents/projects/vcpkg/packages/proj4_x64-linux/share/proj4

Failure logs
N/A

Additional context
N/A