Try fetching remote forkpoint.toml and validators.toml on startup

[bamrith]

No description provided.

[Copilot]

Pull Request Overview

This PR adds functionality to fetch remote forkpoint and validators configuration files on node startup, falling back to local configs if remote fetching fails. The node compares remote and local forkpoint rounds to determine which is more recent.

• Introduces environment variables for remote config URLs and HTTP client logic to fetch configurations
• Refactors config loading to prioritize more recent remote configs over local ones
• Updates struct fields to use parsed validators config instead of file path

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 5 comments.

File	Description
monad-node/src/state.rs	Adds remote config fetching logic with round-based comparison and fallback to local configs
monad-node/src/main.rs	Removes redundant validators config loading by using pre-loaded config from NodeState
monad-node/Cargo.toml	Adds reqwest dependency with blocking feature for HTTP requests
monad-node-config/src/lib.rs	Introduces ValidatorsConfigType alias for type consistency

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