implement eq subcommand group + on subcommand

attach it to parent command group strip.
we can't do the same for bus because VBAN doesn't yet define a packet structure defining those parameters.

src/vmr_cli/bus.py

@@ -7,6 +7,9 @@ from .context import Context
 from .help import CustomHelpFormatter
 
 app = App(name='bus', help_formatter=CustomHelpFormatter())
+# The VBAN protocl does not yet define a packet structure for these bus parameters.
+# Hopefully that will come in the form of a 'VBAN_VMPARAMBUS_PACKET'.
+# app.command(eq.app.meta, name='eq')
 
 
 @app.meta.default

src/vmr_cli/eq.py

@@ -0,0 +1,53 @@
+from typing import Annotated
+
+from cyclopts import App, Argument, Parameter
+
+from .context import Context
+from .help import CustomHelpFormatter
+
+app = App(name='eq', help_formatter=CustomHelpFormatter())
+
+
+@app.meta.default
+def launcher(
+    band: Annotated[int, Argument()] = None,
+    *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
+    index: Annotated[int, Argument()] = None,
+    ctx: Annotated[Context, Parameter(show=False)] = None,
+):
+    """Control the EQ parameters.
+
+    Only channel 0 is supported, as the VBAN protocol only exposes parameters for this channel.
+    """
+    additional_kwargs = {}
+    command, bound, _ = app.parse_args(tokens)
+    if index is not None:
+        additional_kwargs['index'] = index
+    if band is not None:
+        additional_kwargs['band'] = band
+    if ctx is not None:
+        additional_kwargs['ctx'] = ctx
+
+    return command(*bound.args, **bound.kwargs, **additional_kwargs)
+
+
+@app.command(name='on')
+def on(
+    new_state: Annotated[bool, Argument()] = None,
+    *,
+    index: Annotated[int, Parameter(show=False)] = None,
+    band: Annotated[int, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(show=False)] = None,
+):
+    """Get or set the on state of the specified EQ band.
+
+    Parameters
+    ----------
+    new_state : bool
+        If provided, sets the on state to this value. If not provided, the current on state is printed.
+    """
+    if new_state is None:
+        # This doesn't work because the VBAN protocol doesn't send an initial NBS1 packet.
+        # console.out.print(ctx.client.strip[index].eq.channel[0].cell[band].on)
+        return
+    ctx.client.strip[index].eq.channel[0].cell[band].on = new_state

src/vmr_cli/strip.py

@@ -2,11 +2,12 @@ from typing import Annotated, Optional
 
 from cyclopts import App, Argument, Parameter
 
-from . import console
+from . import console, eq
 from .context import Context
 from .help import CustomHelpFormatter
 
 app = App(name='strip', help_formatter=CustomHelpFormatter())
+app.command(eq.app.meta, name='eq')
 
 
 @app.meta.default