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.

app/[locale]/apoiar/page.tsx

@@ -168,7 +168,7 @@ export default async function SupportPage({
         <BlurFade delay={0.5}>
           <div className="mb-20">
             <h2 className="text-3xl font-bold text-center mb-8">
-              Escolha como apoiar
+              {t("cta.support")}
             </h2>
             <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-8 max-w-6xl mx-auto">
               <DonationCard
@@ -182,10 +182,10 @@ export default async function SupportPage({
               <DonationCard
                 id="snack"
                 amount={10}
-                title="Um Lanche"
-                description="Equivale a ~20 minutos de desenvolvimento"
+                title={t("tiers.snack.title")}
+                description={t("tiers.snack.description")}
                 icon="pizza"
-                badge="Popular"
+                badge={t("tiers.snack.badge")}
                 highlighted
               />
               <DonationCard
@@ -198,8 +198,8 @@ export default async function SupportPage({
               />
               <DonationCard
                 id="custom"
-                title="Personalizado"
-                description="Escolha quanto quer doar"
+                title={t("tiers.custom.title")}
+                description={t("tiers.custom.description")}
                 icon="heart"
               />
             </div>