refactor: move ShellContext to contexts directory

src/components/Room/Room.tsx

@@ -8,7 +8,7 @@ import Fab from '@mui/material/Fab'
 import Divider from '@mui/material/Divider'
 import ArrowUpward from '@mui/icons-material/ArrowUpward'
 
-import { ShellContext } from 'ShellContext'
+import { ShellContext } from 'contexts/ShellContext'
 import { usePeerRoom, usePeerRoomAction } from 'hooks/usePeerRoom'
 import { PeerActions } from 'models/network'
 import { UnsentMessage, ReceivedMessage } from 'models/chat'

src/components/Shell/Shell.tsx

@@ -33,7 +33,7 @@ import Home from '@mui/icons-material/Home'
 import Brightness4Icon from '@mui/icons-material/Brightness4'
 import Brightness7Icon from '@mui/icons-material/Brightness7'
 
-import { ShellContext } from 'ShellContext'
+import { ShellContext } from 'contexts/ShellContext'
 import { AlertOptions } from 'models/shell'
 import { PeerNameDisplay } from 'components/PeerNameDisplay'
 

src/pages/Home/Home.tsx

@@ -7,7 +7,7 @@ import Typography from '@mui/material/Typography'
 import TextField from '@mui/material/TextField'
 import { v4 as uuid } from 'uuid'
 
-import { ShellContext } from 'ShellContext'
+import { ShellContext } from 'contexts/ShellContext'
 
 export function Home() {
   const { setTitle } = useContext(ShellContext)

src/pages/PublicRoom/PublicRoom.tsx

@@ -2,7 +2,7 @@ import { useContext, useEffect } from 'react'
 import { Room } from 'components/Room'
 import { useParams } from 'react-router-dom'
 
-import { ShellContext } from 'ShellContext'
+import { ShellContext } from 'contexts/ShellContext'
 
 interface PublicRoomProps {
   userId: string