getTextInstalledPrograms: for nicer user feedback

print(registry.getTextInstalledPrograms(addNewLine=False, indentSpaces=0))

```
===== SAVE COMPRESSED DOCKER IMAGES =====

docker firefox haskal_development python_development skype_with_video vim

workerm@notebook:~$ 
```

print(registry.getTextInstalledPrograms(addNewLine=True, indentSpaces=0))

```
===== SAVE COMPRESSED DOCKER IMAGES =====

docker
firefox
haskal_development
python_development
skype_with_video
vim

workerm@notebook:~$
```


print(registry.getTextInstalledPrograms(addNewLine=True, indentSpaces=4))

```
===== SAVE COMPRESSED DOCKER IMAGES =====

    docker
    firefox
    haskal_development
    python_development
    skype_with_video
    vim

workerm@notebook:~$ 
```