Revert "Make text option an argument instead of an option"

This reverts commit c767a0a.

This changes --text from typer.Argument to typer.Option

This is a breaking change. It puts text on the same level as the other options like image or barcode.
It is breaking because it now requires any text to be preceeded by `--text`.

Ref: <#12 (comment)> and below.

pyproject.toml

@@ -92,13 +92,13 @@ commands =
   labelle --version
   labelle --help
   python -c "import labelle.gui.gui; print('GUI import succeeded')"
-  labelle --output console "single line"
-  labelle --output console-inverted "inverted"
-  labelle --output console multiple lines
+  labelle --output console --text "single line"
+  labelle --output console-inverted --text "inverted"
+  labelle --output console --text multiple --text lines
   labelle --output console --barcode "Barcode" --barcode-type code128
-  labelle --output console --barcode-with-text "Barcode" --barcode-type code128 Caption
-  labelle --output console --qr QR
-  labelle --output console --qr QR Caption
+  labelle --output console --barcode-with-text "Barcode" --barcode-type code128 --text "Caption"
+  labelle --output console --qr "QR"
+  labelle --output console --qr "QR" --text "Caption"
   labelle --output console --picture ./labelle.png
 
 [testenv:{clean,build}]

src/labelle/cli/cli.py

@@ -130,7 +130,7 @@ def default(
     ] = None,
     text: Annotated[
         Optional[List[str]],
-        typer.Argument(
+        typer.Option(
             help="Text, each parameter gives a new line",
             rich_help_panel="Elements",
         ),