I wanted to keep track of what songs my daughter likes/dislikes

[mknod]

I wanted to keep track of artists/songs i used to help soothe my daughter. I mostly used the already provided templates and models here and tried to stay consistent. Let me know if there are improvements that can be made. Thank you!

[cdubz]

@mknod thanks for submitting such a thorough PR. While this work looks good, I have been avoiding merging new core models like this for a while now because the list of possible ones is seemingly endless. In #217 we are discussing how we might go about adding a generic, customizable model for folks to use. Any collaboration on that front would be greatly appreciated.