[Tag]: Fleshing out component and plot-type tags in the tag glossary

### Need

`component` tag is missing a `colorbar` subcategory.

`plot-type` is missing many of the types from the [plot type gallery](https://matplotlib.org/stable/plot_types/index.html)

### Proposed solution

Explicit proposed tags:
- `component: colorbar`

Less-explicit tags:
- Every listed plot type in the gallery should probably have a tag