Add Autocomplete icon

[hanzei]

Summary

Ticket Link

Fixes #191

[abhijit-singh]

@hanzei The icon seems to have a white background within the image which is inconsistent with the rest of the plugins. Can we replace the icon with the attached file?

[hanzei]

@abhijit-singh E.g. /github also uses a white background. To me there doesn't seem to be a standard. Still, I'm 0/5 on what to do there. Just wanted to check with you what the standard should be.

[abhijit-singh]

Agreed. I can see why it's almost necessary with Github, unless we solve it algorithmically, which I feel is ideal. I'll create a ticket for myself to come up with a logic that works, till then can we take a call on a case-by-case basis?

[hanzei]

@abhijit-singh Sure 👍

It seems like the file you send above (https://user-images.githubusercontent.com/14369607/107503207-ae2c5a80-6bbf-11eb-9905-a8def040f187.png) also contains a background. Could you please double check?

[abhijit-singh]

@hanzei The file is transparent if you download it and check. It seems like the browser is adding that background colour for some reason.

[hanzei]

@abhijit-singh Yes, that seems to be added by my browser. Could you please provide the image as an svg? Slash command icon have to be that type.

[hanzei]

@abhijit-singh Thanks for the updated image. I've updated the screenshot. Please take another look.

[codecov-io]

Codecov Report

Merging #209 (e5a390c) into master (8437af7) will decrease coverage by 0.04%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #209      +/-   ##
==========================================
- Coverage   23.25%   23.21%   -0.05%     
==========================================
  Files          64       64              
  Lines        2313     2317       +4     
==========================================
  Hits          538      538              
- Misses       1695     1699       +4     
  Partials       80       80              

Impacted Files	Coverage Δ
server/command/command.go	34.78% <0.00%> (-1.59%)	⬇️

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[DHaussermann]

Tested and passed

• Autocomplete icon appears as expected
• Confirmed that icon appears as expected and there is no light background visible on dark themes
• Icon appears for all sub-commands

LGTM!