feat: Add create_embeddings function to Jina client

- Added a `create_embeddings` function to the Jina client to
  generate embeddings for given input texts.
- Improved the `create_embeddings` function input parameters
  for better flexibility and error handling.
- Updated `TextEmbeddingInput` struct to handle optional
  parameters for embedding type, truncation type, and late
  chunking.  This improves the flexibility of the embedding
  generation process.

examples/clients/jina.vsh

@@ -2,5 +2,12 @@
 
 import freeflowuniverse.herolib.clients.jina
 
-jina_client := jina.get()!
-println('jina: ${jina_client}')
+mut jina_client := jina.get()!
+
+embeddings := jina_client.create_embeddings(
+	input: ['Hello', 'World']
+	model: .embeddings_v3
+	task:  'separation'
+) or { panic('Error while creating embeddings: ${err}') }
+
+println('Created embeddings: ${embeddings}')