Include Submenu option + Cosmos link in navbar #1415

Job	Run time
Compute Branch Sha	1s
Build Testnet / Redirects	22s
Build Testnet / Advance Tools	6m 24s
Build Testnet / Documentation	1m 32s
Build Testnet / Rewards Dashboard	1m 5s
Build Testnet / tBTC Bridge v1	2m 39s
Build Testnet / Token Bridge	2m 22s
Build Testnet / Token Bridge v1	2m 38s
Build Testnet / USDC Bridge	2m 41s
Build Testnet / Publish	1m 8s
Deploy Testnet	33s
	21m 25s

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