127 add examples

[gisellerosetta]

Proposed Changes

• Moved the examples page into reference
• Moved the Labour Markets example into the page
• Added some extensions for the collapsible code chunks

Related Issues

• Fixes Add examples #273
• Related to Link to examples that use gptables #127

Pre-requisites

This section may not be fully required if the branch is not merging into main.
Please indicate items that aren't necessary and why, with comments around incomplete checks.

• Version number has been incremented, according to SemVer NA
• Changelog has been updated, listing changes to this version. Use the keep a changelog format NA
• New features are tested NA
• New features are documented using the numpydoc docstring format NA
• Other relevant package documentation is updated
• For new functionality, examples are included in the docs or a feature request has
  been made for it/them. NA

[Jday7879]

Changes make sense to me. haven't actually checked the example code but I think its going to be changed and formatted differently in the future iirc :)