[Feature Request] Provide some mechanism for adjusting column widths in the editor

[gwhitney]

**Is your feature request related to a problem? Please describe. **
I have many tables with a first column that contains brief (often one-word) headings/topics, while the later columns have long content. Yet in the table editor at the moment, that first column always takes up the same share of the width of the editor window, resulting in a great deal of useless whitespace and making the other columns wrap into many more lines than necessary.

Describe the solution you'd like
Some form of auto-width-calculation of the editor table might be nice; the obsidian preview mode does something like this, so that would be helpful to start with. Then either way, it would be nice to be able to drag the column divisions left and right to manually customize the width of each column in the editor. But really any mechanism to allow me to make that first column narrower and the other columns wider would be fine.

Describe alternatives you've considered
Not aware of any.