refactor: update ESLint configuration and remove unused dependencies

- Replaced Nuxt ESLint configuration with Antfu's ESLint config.
- Removed 'nuxt-visitors' module from Nuxt configuration.
- Added linting scripts to package.json for easier code quality checks.
- Introduced a new API endpoint for fetching weather data from OpenWeather.
- Enhanced chat types with new enums and properties for better state management.
- Added OpenWeather response types for improved type safety.
- Updated social links in types/index.ts to include an email contact.

app/stores/chat.ts

@@ -1,17 +1,50 @@
-import type { ChatMessage } from '~~/types'
+import type { ChatMessage, ChatType } from '~~/types'
+import { ChatFetchState, ChatSender, ChatState } from '~~/types'
 
 export const useChatStore = defineStore('chat', () => {
   const messages = ref<ChatMessage[]>([])
   let id = 0
 
-  function addMessage(message: ChatMessage) {
-    messages.value.push({ ...message, id: id++ })
+  const canSend = computed(() => {
+    return !messages.value.some(msg => msg.state === ChatState.LOADING)
+  })
+
+  function addMessage(type: ChatType, content: string, sender: ChatSender, fetchStates: ChatFetchState[]) {
+    if (sender === ChatSender.ARTHUR) {
+      const message: ChatMessage = {
+        id: id++,
+        type,
+        content: null,
+        sender,
+        state: ChatState.LOADING,
+        fetchStates: [...fetchStates, ChatFetchState.DONE],
+      }
+
+      messages.value.push(message)
+    }
+    else {
+      messages.value.push({
+        id: id++,
+        type,
+        content,
+        sender,
+        state: ChatState.SENT,
+        fetchStates: [ChatFetchState.DONE],
+      })
+    }
   }
 
   function clearMessages() {
-    messages.value = []
+    messages.value.splice(0, messages.value.length)
     id = 0
   }
 
-  return { messages, addMessage, clearMessages }
+  function setLoadingState(messageId: number, loadingState: ChatState) {
+    const message = messages.value.find(msg => msg.id === messageId)
+    if (message) {
+      message.state = loadingState
+    }
+  }
+
+  return { messages, addMessage, clearMessages, canSend, setLoadingState }
 })