translation ui (wip)

A proof of concept user interface for Text, Document, and Speech translation (still missing).

current state

The app works, but needs manual creation of Azure resources and manual setting of environment secrets.

ToDos

Add speech translation
Infra deployment
- Resource Group
- Storage account
- Translator Resource
- ACR
- Key vault
- web app (B1)
Authentication via MSI or Service Pricincipal
- Create a service principal
```
az ad sp create-for-rbac --name "myApp" --role contributor \
--scopes /subscriptions/{subscription-id}/resourceGroups/{resource-group} \
--sdk-auth
```
and copy the JSON output similar to this:
```
{
  "clientId": "<GUID>",
  "clientSecret": "<STRING>",
  "subscriptionId": "<GUID>",
  "tenantId": "<GUID>",
  "resourceManagerEndpointUrl": "<URL>"
  (...)
}
```
- Automatically set the github secrets and or store credentials in key vault
  - registry username and password
  - storage_account_key
  - storage_account_name
  - translator_blob_sas_token
  - translator_resource_key
  - translator_resource_name
  - registry_username
  - registry_password
  - AZURE_CREDENTIALS