Which components does the task require to be changed? (think hard pls)

snforge

Description

Context:
https://foundry-rs.github.io/starknet-foundry/appendix/scarb-toml.html?highlight=tool#scarbtoml-contents
We can define profiles in scarb.toml and use environmental variables as values.

Currently forge support such syntax: url = "$RPC_URL", but url = "${RPC_URL}" should be possible

Requested here: https://t.me/starknet_foundry_support/5363

TODO:

• Implement described functionality -

  starknet-foundry/crates/configuration/src/lib.rs

  Lines 118 to 133 in 8ce451e

  	serde_json::Value::String(val) if val.starts_with('$') => resolve_env_variable(&val),
  	val => Ok(val),
  	}
  	}
  	fn resolve_env_variable(var: &str) -> Result<serde_json::Value> {
  	assert!(var.starts_with('$'));
  	let value = env::var(&var[1..])?;
  	if let Ok(value) = value.parse::<Number>() {
  	return Ok(serde_json::Value::Number(value));
  	}
  	if let Ok(value) = value.parse::<bool>() {
  	return Ok(serde_json::Value::Bool(value));
  	}
  	Ok(serde_json::Value::String(value))
  	}

• Update documentation
• Create relevant tests