Add morning exercise solutions to programming-fundamentals content

[vherus]

In the sequence items for JS fundamentals, each day has a morning exercise in code snippet blocks. These need some solutions for the morning teachers.

[shahzadnaeem]

Can also look at this in combination with #127 after #123

[shahzadnaeem]

Solutions addded to new https://github.com/boolean-uk/js-fundamentals-teachers-notes repo that contains all code and solutions for all js-fundamentals sequence items

[shahzadnaeem]

TODO: Remove existing content from Notion once reviewed

[vherus]

@shahzadnaeem thanks for this.

Let's make a few changes to this one:

1. Rename the repo to js-fundamentals-morning-sessions (keep it private, students don't need to see this one)
2. Remove the full-exercise-exemplar directory and add publicly visible exemplar repositories for each of the newly extracted fundamentals repos (e.g. js-fundamentals-objects-exemplar)
3. Update the Sequence Items links in the readme to point to the relevant sequence items in Notion