Make getEndpointURL (fileinfo) case insensitive

[paulo-ocean]

we have these 2 calls:
const endpoint = await getEndpointURL(providerUrl, 'fileinfo')
const endpoint = await getEndpointURL(providerURL, 'download')

getEndpointURL() should be case insensitive. "fileinfo" is a special case, since its the only provider route that does not follow camelCase, the express routes are case insensitive by default, so it treats fileinfo equal to fileInfo. The issue is that the service name check (from provider root endpoint) is case sensitive at the moment, so it can easily break...
Solution:
Make this function checks case insensitive

async function getEndpointURL(providerURL, serviceName) {
  const response = await fetch(providerURL, {
    method: 'GET',
    headers: {
      'Content-type': 'application/json'
    }
  })
  const providerData = await response.json()
  for (const i in providerData.serviceEndpoints) {
    if (i === serviceName) {
      return providerData.serviceEndpoints[i]
    }
  }
  return null
}