Stitch only png image

## Installation

0. Install nix 
```
curl -fsSL https://install.determinate.systems/nix | sh -s -- install --determinate
```
Follow the installation guide. For complete information: https://github.com/DeterminateSystems/nix-installer

Then run this (and wait `:)`)
```
nix-shell --pure
```
you can `exit` from the shell later.

1. finally
```
cd StitchImg/
cargo run --release & dotnet run -c Release
```