Centralize and update contact information across app

Introduced a centralized contacts configuration in src/config/contacts.js, added a useContacts hook, and a reusable ContactInfo component. Updated Header, Footer, Home, Office, Services, About, Objects, and Apartament pages to use the new contact data source. Added documentation in CONTACTS_CONFIG.md and included the AlmaVid logo asset.

src/config/contacts.js

@@ -0,0 +1,70 @@
+export const CONTACTS = {
+  phone: {
+    display: "8(351)217-00-74",
+    link: "tel:+73512170074",
+  },
+  email: {
+    display: "sdelka.74@yandex.ru",
+    link: "mailto:sdelka.74@yandex.ru",
+  },
+
+  address: {
+    main: {
+      street: "ул. Комаровского, 4А, офис 210",
+      city: "Челябинск",
+      postalCode: "454052",
+      full: "ул. Комаровского, 4А, офис 210, Челябинск, 454052",
+    },
+    office: {
+      street: "Ленина, д. 60 В, оф. 701",
+      city: "Челябинск",
+      description: "Вход в офис со двора",
+      full: "Ленина, д. 60 В, оф. 701, Челябинск",
+    },
+  },
+
+  coordinates: [55.242355, 61.37697],
+
+  social: {
+    vk: {
+      url: "https://vk.com/almavid_74",
+      name: "ВКонтакте",
+    },
+    telegram: {
+      url: "https://t.me/almavid_74",
+      name: "Telegram",
+    },
+    instagram: {
+      url: "https://instagram.com/almavid_74",
+      name: "Instagram",
+    },
+  },
+
+  companyName: "Агентство недвижимости АЛМА-ВИД",
+  companyNameShort: "АЛМА-ВИД",
+
+  workingHours: "Пн-Пт: 9:00-18:00, Сб: 10:00-16:00",
+
+  getBalloonContent: () => {
+    return `
+      <div>
+        <strong>${CONTACTS.companyName}</strong><br/>
+        Адрес: ${CONTACTS.address.main.street}<br/>
+        ${CONTACTS.address.main.city}, ${CONTACTS.address.main.postalCode}<br/>
+        Тел: ${CONTACTS.phone.display}
+      </div>
+    `;
+  },
+};
+
+export const API_CONFIG = {
+  baseURL: "https://almavid.ngr1.ru",
+  endpoints: {
+    feedback: "/api/feedback/send",
+    rental: "/api/rental/send",
+  },
+
+  getFullURL: (endpoint) => {
+    return `${API_CONFIG.baseURL}${endpoint}`;
+  },
+};