[gh-2406] support rpc requests via proxies.

[feliciss]

Summary

• Support proxy env in rooch config files.

• Closes #2406

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Name	Status	Preview	Comments	Updated (UTC)
rooch-portal	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 2, 2024 0:34am
rooch-portal-v2.1	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 2, 2024 0:34am

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| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **rooch** | ⬜️ Ignored ([Inspect](https://vercel.com/rooch/rooch/13mAPFACDmvpUd8U1kPxztgNVZdW)) | [Visit Preview](https://rooch-git-fork-feliciss-2406-rooch.vercel.app) | | Sep 2, 2024 0:34am |

[feliciss]

I leave this issue untouched.