Cell-specific / global trim method

**Is your feature request related to a problem? Please describe.**
I regularly use the import from excel file functionality. The people editing the excel files are not consistent with their usage of trailing whitespace. I often get spaces and endlines where they shouldn't be.

**Describe the solution you'd like**
A trim option that works on cell right-click, multi-cell right-click, and/or a global trim option. Trim in this case means removing leading and trailing whitespace string values.

**Describe alternatives you've considered**
Manually editing all the cells, this is a pain in the ass.

**Additional context**
NA