So you want to make a plug-in/Extension

You will need to (prerequisites):

Download dotnet 6.0 sdk if you havent already
dotnet new --install Tesses.TimelapseExtension
dotnet tool install --global Tesses.TimelapsePack
TimelapseNow (Recomended)
Code editor, IDE of your choice for .NET
Knowledge with C#, F# or VB.NET (Hince I dont know F# that much, I will only show code for C#/VB.NET)

Creating an extension

cd into directory for project

dotnet new timelapsenowext

dotnet new timelapsenowext --language VB