usecase

somtimes it is easier to play the rhythm if one speaks the wording. The wording should be printed close to the count notes

Solution approach

[x] introduce new parameters countnotes.cntextleft and countnotes.cntextright as string
[x] let these paramters format the output of countnotes using placeholders
```
{lyrics} - print the lyric
{countnote} - print the countnote
```
If none of these parameters is provided, it falls back to countnote