Make ADC a component

src/components/readouts/ADCs.jl

 module ADCs
-import JuMP: @constraint, value
-import ...Variables: variables, dwell_time, duration, effective_time, get_free_variable, VariableType, nsamples, resolution, oversample, make_generic
-import ...BuildingBlocks: BuildingBlock, apply_simple_constraint!, set_simple_constraints!, fixed, make_generic
-import ...BuildSequences: global_model
+import JuMP: @constraint
+import ...AbstractTypes: ReadoutComponent
+import ....BuildSequences: global_model, fixed
+import ....Variables: oversample, nsamples, dwell_time, duration, time_to_center, effective_time, resolution, VariableType, apply_simple_constraint!, set_simple_constraints!, get_free_variable, make_generic
+
 
 """
     ADC(; center_halfway=true, oversample=1, variables...)
 
-Adds a readout event with `nsamples` readouts.
+Adds a readout event.
 
 ## Parameters
 - `center_halfway`: by default the `time_to_center` is assumed to be half of the `duration`. Set this to false to disable this assumption.
@@ -21,7 +22,7 @@ Adds a readout event with `nsamples` readouts.
 - `time_to_center`: time till the center of k-space from start of ADC in ms.
 - `effective_time`: same as `time_to_center`.
 """
-struct ADC <: BuildingBlock
+struct ADC <: ReadoutComponent
     resolution :: VariableType
     dwell_time :: VariableType
     time_to_center :: VariableType