Bugfix/pokedex minor fixes

[Glup3]

some minor fixes:

• empty moveset list
• duplicate key error for pokemon forms (unown)
• MUI dark theme + docusaurus (https://webreaper.dev/blog/material-ui-theme-with-docusaurus/)
• gender ratio
• empty search box egg
• arceus not included in autocomplete range
• pokemon image circle

Closes #45 Closes #44