Working on issue 201 : Allow picking multiple categories

[alicendeh]

Summary

Working on issue 201 entitled Allow picking multiple categories and add more category options

Description of PR here...
Enabling users to add multiple categories at once before submission.
Closes #201

Changes

-Added packages @emotion/react,@emotion/styled,@mui/material

• Changed select to Stack from @mui/material/Stack material UI library

Screenshot

[alicendeh]

Hi @NdibeRaymond and @tuxology could you please take a look at this.
Also, i have a question

Does the API allows the submission of an array of categories

[tuxology]

Currently these categories are hard-coded and fixed. We came up with around 10 of them based on project types. "Tags" however are dynamic. There is a task related to reorganizing categories and tags. Tags are intended to be uses as hashtags etc, while categories are more rigid and are good for browsing using "breadcrumbs" style navigation. We don't have that support currently as well and this work is still in ideation phase (check https://github.com/unstructuredstudio/zubhub/wiki/Feature-Roadmap-&-Ideas-2022#35-tags-and-categories-restructure). In such case, this PR does not really help in proving the UX for now. If you want you can propose a new idea of Category vs Tags resolution, please start a discussion! For me, it mostly looks like categories == breadcrumbs and tags are what we add as hashtags under description. Therefore, this will also change the UX of individual projects