[Portal] Test: initial load of portal pages connect and engine in spanish for testing

[GiselleNessi]

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title: "[SDK/Dashboard/Portal] Feature/Fix: Concise title for the changes"

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Notes for the reviewer

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How to test

Unit tests, playground, etc.

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PR-Codex overview

This PR primarily focuses on translating various components and documentation from English to Spanish, enhancing accessibility for Spanish-speaking users. It also introduces a new LanguageSelector component for language selection.

Detailed summary

• Added LanguageSelector component in LanguageSelector.tsx.
• Translated API endpoint metadata titles and descriptions to Spanish across multiple files.
• Updated support documentation and FAQs to Spanish.
• Translated various sections of the documentation, including getting started guides and usage instructions.
• Introduced Spanish redirects in redirects.mjs.
• Enhanced the Header component with a language selection feature.

The following files were skipped due to too many changes: apps/portal/src/app/engine/features/contracts/page.mdx, apps/portal/src/app/contracts/build/base-contracts/erc-1155/base/page.mdx, apps/portal/src/app/contracts/deploy/reference/page.mdx, apps/portal/src/app/connect/wallet/user-management/link-multiple-identity/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/stake-erc1155/page.mdx, apps/portal/src/app/contracts/publish/overview/page.mdx, apps/portal/src/app/nebula/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/vote/page.mdx, apps/portal/src/app/nebula/api-reference/chat/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/token-drop/page.mdx, apps/portal/src/app/engine/features/alert-notifications/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/airdrop-erc721-claimable/page.mdx, apps/portal/src/app/connect/wallet/ecosystem/permissions/page.mdx, apps/portal/src/app/contracts/modular-contracts/module-contracts/erc-1155/metadata/openEditionMetadataERC1155/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/airdrop-erc20-claimable/page.mdx, apps/portal/src/app/connect/wallet/user-management/export-private-key/page.mdx, apps/portal/src/app/connect/pay/onramp-providers/page.mdx, apps/portal/src/app/contracts/deploy/deploy-contract/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/airdrop-erc20/page.mdx, apps/portal/src/app/react/v5/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/airdrop-erc1155-claimable/page.mdx, apps/portal/src/app/engine/features/cancelling-transactions/page.mdx, apps/portal/src/app/contracts/build/base-contracts/erc-1155/signature-mint/page.mdx, apps/portal/src/app/contracts/build/base-contracts/erc-1155/lazy-mint/page.mdx, apps/portal/src/app/contracts/build/base-contracts/erc-1155/drop/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/multiwrap/page.mdx, apps/portal/src/app/engine/guides/airdrop-nfts/page.mdx, apps/portal/src/app/contracts/explore/overview/page.mdx, apps/portal/src/app/connect/in-app-wallet/custom-auth/overview/page.mdx, apps/portal/src/app/connect/pay/testing-pay/page.mdx, apps/portal/src/app/contracts/modular-contracts/module-contracts/erc-20/misc/transferableERC20/page.mdx, apps/portal/src/app/contracts/modular-contracts/module-contracts/erc-20/misc/creatorTokenERC20/page.mdx, apps/portal/src/app/engine/features/gasless-transactions/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/stake-erc20/page.mdx, apps/portal/src/app/connect/auth/page.mdx, apps/portal/src/app/connect/account-abstraction/faq/page.mdx, apps/portal/src/app/contracts/explore/pre-built-contracts/account-factory/page.mdx, apps/portal/src/app/contracts/modular-contracts/module-contracts/erc-721/minting/mintableERC721/page.mdx, 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apps/portal/src/app/insight/blueprints/page.mdx, apps/portal/src/app/contracts/design-docs/drop/page.mdx, apps/portal/src/app/contracts/design-docs/modular-contracts/page.mdx, apps/portal/src/app/contracts/design-docs/marketplace/page.mdx

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