When no `supabaseKey` is passed in it throws an error

[zlwaterfield]

Chore

Describe the chore

if createClient is called and the supabaseKey passed in is null or undefined then a non-specfic error thrown. This can happen if you make a call like this:

    return createClient(
      process.env.SUPABASE_URL,
      process.env.SUPABASE_PUBLIC_KEY
    );

and the env variable is empty.

The error is:

TypeError: Cannot read property 'length' of undefined
    at SupabaseClient.initClient (/Users/zlwaterfield/programming/switch-log/node_modules/@supabase/supabase-js/lib/index.js:7:263)
    at SupabaseClient.select (/Users/zlwaterfield/programming/switch-log/node_modules/@supabase/supabase-js/lib/index.js:7:920)
    at CategoryRepository.findByLabel (webpack-internal:///./repositories/CategoryRepository.ts:12:54)
    at LogEntry._findCategory (webpack-internal:///./services/LogEntryService.ts:86:42)
    at LogEntry.timeStart (webpack-internal:///./services/LogEntryService.ts:17:31)
    at __webpack_exports__.default (webpack-internal:///./pages/api/log.ts:11:31)
    at apiResolver (/Users/zlwaterfield/programming/switch-log/node_modules/next/dist/next-server/server/api-utils.js:8:7)
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
    at async DevServer.handleApiRequest (/Users/zlwaterfield/programming/switch-log/node_modules/next/dist/next-server/server/next-server.js:45:397)
    at async Object.fn (/Users/zlwaterfield/programming/switch-log/node_modules/next/dist/next-server/server/next-server.js:37:176)

We should add validation that the supabaseKey is passed in or at least fix this line so the error is better handled.

[awalias]

ah this is a great catch @zlwaterfield we should def add some validation here