pip with embedded python

Even if explicitly stated that the embeddable version of Python does not
support Pip, it is possible with care. You need to:

Download and unzip Python embeddable zip file.
In the file python39._pth or similar, uncomment the import command.
Result should look similar to this:
```
python39.zip
.
import site
```
Download get-pip.py to the Python install folder
Run get-pip.py. this installs Pip into the Scripts directory:
```
python get-pip.py
```
Run Pip directly from command line as Pip is a executable program (this
example is to install Pandas):
```
.\Scripts\pip install pandas
```

You could find more information about this in the Pip issue 4207