feat: Add Linea URL for Sentinel (#527)

Signed-off-by: dan437 <80175477+dan437@users.noreply.github.com>

Author: dan437

src/constants.ts

@@ -10,6 +10,7 @@ export const SENTINEL_API_BASE_URL_MAP: SentinelApiBaseUrlMap = {
   56: 'https://tx-sentinel-bsc-mainnet.api.cx.metamask.io',
   8453: 'https://tx-sentinel-base-mainnet.api.cx.metamask.io',
   42161: 'https://tx-sentinel-arbitrum-mainnet.api.cx.metamask.io',
+  59144: 'https://tx-sentinel-linea-mainnet.api.cx.metamask.io',
   11155111: 'https://tx-sentinel-ethereum-sepolia.api.cx.metamask.io',
 };