rename Sharkey frontend components to `Sk*`
$ git diff --name-only --diff-filter=A misskey/develop -- packages/frontend/src/components/
packages/frontend/src/components/MkFormula.vue
packages/frontend/src/components/MkMfmWindow.vue
packages/frontend/src/components/MkModPlayer.vue
packages/frontend/src/components/SkApprovalUser.vue
packages/frontend/src/components/SkNoteHeader.vue
packages/frontend/src/components/SkNoteSub.vue
packages/frontend/src/components/SkOldNoteWindow.vue
packages/frontend/src/components/SkOneko.vue
packages/frontend/src/components/SkSearchResultWindow.vue
Those first three have the "wrong" name. Rename them to Sk*
and update all references.
Why: so we know immediately which files are ours and which are not.