Replace var with let and const for Modern JavaScript Standards

[manotoor]

Describe the bug
Looks like we are using older JS variables, we should move towards modern tech stack. Since let const supersede var and help with proper scoping

To Reproduce
Seems we have a few references to "var" for typescript files
https://github.com/search?q=repo%3AelizaOS%2Feliza+%2Fvar+.*%2F+path%3A**%2F*.ts&type=code

Expected behavior

update references to const, (seems like they are coming from hooks)
Expected

let baseURL = models[provider].endpoint;

Actual

var baseURL = models[provider].endpoint;

Expected

const [tx, err] = await indexer.upload(
                file,
                0,
                zgEvmRpc,
                flowContract
            );

Actual

var [tx, err] = await indexer.upload(
                file,
                0,
                zgEvmRpc,
                flowContract
            );

^ this one might need to be looked into more. Seems like tx is only logged not sure if it's referenced outside of scope.

Screenshots

Additional context

[github-actions]

Hello @manotoor! Welcome to the ai16z community. Thank you for opening your first issue; we appreciate your contribution. You are now a ai16z contributor!

[yashmangal112]

Hi @manotoor, can I solve this issue? I want to contribute to this issue.