[component] File Helper

[ivicac]

As a Workflow Developer
I want to be able to use the native JWT Helper connector
So that I can implement more complex integration use cases where the connector is involved.

Acceptance Criteria

List of implemented actions:

• Rename FileStorage to FileHelper
• Convert file from Base64
  Creates a new file from a Base64-encoded string. 
• Convert file to Base64
  Encodes a file into a Base64 string. 
• Convert to UTF-8 from URL
  Downloads a file from a URL and converts its character encoding to UTF-8. 
• Create byte ranges list
  Generates a list of byte ranges for chunked file uploads. 
• Create file from content
  Creates a file using provided content, such as JSON or plain text.
• Create file from URL
  Downloads a file from a specified URL and creates a file object.
• Get file size
  Retrieves the size of a file in bytes.
• Read file contents
  Reads the contents of a file and returns it as a string. 
• Read file contents as array
  Reads the contents of a file and returns it as an array, using a specified delimiter.
• Upload file as form data
  Uploads a file to a specified URL as part of a multipart/form-data request.
• Upload file chunk
  Uploads a specific chunk of a file to a designated URL. 
• Upload file to URL
  Uploads an entire file to a specified URL using a defined HTTP method.

Definition of Done:

• Unit/Integration tests
• Documentation