[Plot] Add class for filter controls

Add class to wrap filter editor (component-provided)
for use in MCT-3886
[Plot] Add point filtering panel

Add point filtering panel to plot control area.
Driven by a (currently-stubbed-in) feed filter
capability provided via the plot manifestation.
For MCT-3886.
[Plot] Enforce plot filter in plotted data

Enforce plot filter for data points displayed on
plot, for MCT-3886.
[Plot] Get filtering capability from component

Read point filtering capability (for MCT-3886)
from the component(s) being plotted.