feat(i18n): Replace hardcoded strings with translation keys in support and donation components

Replaced hardcoded Portuguese text with next-intl translation keys in the support page, header, and donation card components to enable internationalization and support multiple languages. This improves the app's accessibility and localization capabilities.

components/Header.tsx

@@ -23,7 +23,7 @@ export default function Header() {
     { href: `/${locale}/market`, label: t("market") },
     { href: `/${locale}/sobre`, label: t("about") },
     { href: `/${locale}/precos`, label: t("prices") },
-    { href: `/${locale}/apoiar`, label: "Apoiar", highlight: true },
+    { href: `/${locale}/apoiar`, label: t("support"), highlight: true },
   ];
 
   return (