Add styles for setting input and buttons

src/views/settings/components/Frontend.vue

src/views/settings/components/Http.vue

src/views/settings/components/Inputs.vue

src/views/settings/components/Logger.vue

src/views/settings/components/Setting.vue

src/views/settings/components/Upload.vue

...tings/components/inputComponents/EditableKeywordInput.vue

...iews/settings/components/inputComponents/MascotsInput.vue

src/views/settings/components/inputComponents/PruneInput.vue

...ws/settings/components/inputComponents/RateLimitInput.vue

src/views/settings/styles/main.scss