Add stats page (status counts by scope)

CHANGELOG.md

README.md

src/api/instance.js

src/lang/en.js

src/router/index.js

src/store/getters.js

src/store/index.js

src/store/modules/instance.js

src/store/modules/peers.js

src/views/stats/index.vue

src/views/statuses/index.vue