Intentionally offset GPS coordinates using heading

Question

Is there a known way of intentionally offsetting a latitude/longitude position by using a combination of the latitude/longitude and heading? I'm struggling to find any kind of answer or solution for this...

[Edit Partial Solution]

I came across this link which is what my code below is based on below which I think was a link within the Richard's link below.

As can be seen in the image below, I wanted to purposely introduce an offset which can be seen in the points highlighted in 'yellow' are offset by about 10 meters.

This does not hold true for some coordinates (i.e. I don't observe a consistent offset), which I am assuming depends on using the heading value, which I believe comes back to my original question, I believe use of the heading in a calculation is required.

I will continue my search and update if i I come across a solution for the next person.

#include <math.h>
#define EARTH_RADIUS (6378137.0)
void function(double lat_in, lon_in, double offset_mtr, double *lat_out, double *lon_out)
{
    double dLat = 0.0;
    double dLon = 0.0;
    if( (lat_out != NULL) && (lon_out != NULL) )
    {
        dLat = (offset_mtr/EARTH_RADIUS);
        dLon = (offset_mtr/(EARTH_RADIUS * cos(M_PI*lat_in/180)));

        (*lat_out) = lat_in + dLat * 180/M_PI;
        (*lon_out) = lon_in + dLon * 180/M_PI;
    }
}