feat: adição de novos ícones SVG e configuração do ambiente

- Adicionados ícones SVG para ChatGPT, Claude, Gemini e OpenRouter
- Implementados ícones para modos claro e escuro do ChatGPT
- Criado script de inicialização para PostgreSQL com extensão pgcrypto
- Adicionado script de configuração de ambiente que faz backup do .env
- Configurado tsconfig.json para TypeScript com opções de compilação

public/avatares/avatar_010.svg

@@ -0,0 +1,21 @@
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+    </clipPath>
+  </defs>
+  <g id="Group_306" data-name="Group 306" transform="translate(-640 -220)">
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+    <g id="Mask_Group_9" data-name="Mask Group 9" transform="translate(5091 16120)" clip-path="url(#clip-path-107)">
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+      </g>
+    </g>
+  </g>
+</svg>