Changed from config file based API storage to browser localStorage

[HansonSoftware]

In the PR I have added the component ConfigComponent (found in /ui/activeLLM/configComponent.js) to the Navbar.

Implementation notes:

• When an API key is submitted, it is checked for validity with a small request to OpenAI.
• The Fix button found in (/ui/rulePanel.js) is only shown after an API key is entered.
• There is no longer the need for the config.js file or any instructions on how to enter the API key, that clunky UI has been replaced with this.

Notes on styling:

• I ran into some styling issues while trying to make this look nice.
• Every piece of javascript that looks like the example below can be moved to a CSS file instead, I could not get the styles to persist that way.:

    const buttonParent = {
      position: "absolute",
      top: "0",
      right: "0",
      zIndex: "1",
    };

[SaharMehrpour]

@HansonSoftware Thank you for the PR.