chore: Cleaned up the supported chain

[0xAtum]

To keep the template lite, I've removed all the chains I put in. That way, the implementer can manually add the chains they want in Chains.json

• Added Chains.json (script/config/Chains.json). Do not remove this file, otherwise the BaseScript will no longer work
• Added Pre-loading in BaseScript. _loadContract(false) is being automatically called. If you want to load them in your simulation too, you will need to call _loadContract(true) in your run() function

[github-actions]

Slither report

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Summary

• missing-zero-check (1 results) (Low)
• immutable-states (1 results) (Optimization)

missing-zero-check

Impact: Low
Confidence: Medium

• ID-0
  HelloWorld.constructor(address)._owner lacks a zero-check on :
  - owner = _owner

template-foundry-project/src/HelloWorld.sol

Line 19 in 01d920c

constructor(address _owner) {

immutable-states

Impact: Optimization
Confidence: High

• ID-1
  HelloWorld.owner should be immutable

template-foundry-project/src/HelloWorld.sol

Line 11 in 01d920c

address public owner;