Move code from header to source

Context

The goal is to reduce the code size.

Result

Individual object files sizes were reduced (see table bellow). This exercice showed that most of the code size is due to REGISTRAR templates and AIDGE_ASSERT MACROs.

file	old size (KB)	new size (KB)
backend/cpu/data/TensorImpl.cpp.o	545	504
analysis/StaticAnalysis.cpp.o	410	318
analysis/OperatorStats.cpp.o	402	413
analysis/DynamicAnalysis.cpp.o	364	266
graph/GraphView.cpp.o	349	347
data/Tensor.cpp.o	349	347
scheduler/Scheduler.cpp.o	348	340
operator/AvgPooling.cpp.o	332	329
operator/MaxPooling.cpp.o	262	262
operator/ConvTranspose.cpp.o	251	251
operator/Conv.cpp.o	249	249
operator/Pad.cpp.o	244	244
operator/ConvDepthWise.cpp.o	233	233
operator/Producer.cpp.o	224	224
operator/BatchNorm.cpp.o	211	209
operator/Resize.cpp.o	209	209
operator/Stack.cpp.o	207	133
operator/Reshape.cpp.o	205	152
operator/Pop.cpp.o	201	125
operator/MetaOperator.cpp.o	199	198
operator/Slice.cpp.o	187	176
backend/OperatorImpl.cpp.o	184	183
graph/Node.cpp.o	182	182
operator/Select.cpp.o	174	100
operator/Select.cpp.o	174	100
operator/Cast.cpp.o	171	168
operator/GenericOperator.cpp.o	168	168
scheduler/MemoryManager.cpp.o	165	165
operator/OperatorTensor.cpp.o	164	160
operator/Split.cpp.o	159	153
operator/Gather.cpp.o	158	154
graph/Matching.cpp.o	155	155
operator/GridSample.cpp.o	147	147
recipes/ConvToMatMul.cpp.o	144	143
operator/Transpose.cpp.o	144	144
operator/Concat.cpp.o	140	135
recipes/MatMulTiling.cpp.o	139	138
operator/Memorize.cpp.o	139	122
operator/DepthToSpace.cpp.o	137	130
recipes/ConstantFolding.cpp.o	136	136
operator/Unfold.cpp.o	134	128
recipes/HorizontalTiling.cpp.o	132	130
operator/ReduceMean.cpp.o	131	131
operator/Fold.cpp.o	128	128
operator/Shape.cpp.o	127	122
recipes/ApplyWeightInterleaving.cpp.o	125	122
operator/Scaling.cpp.o	124	124
operator/Identity.cpp.o	122	44
operator/MetaOperatorDefs/Leaky.cpp.o	121	118
operator/Squeeze.cpp.o	119	143
operator/Mod.cpp.o	119	119

Even though big object files size were reduced, the global size is unchanged. At least code is better organized.

Major modification

• Move generic implementations to their own implementation file in backend/generic/operator
• upd: Squeeze_Op::forwardDims()
• Move a lot of code from header to source files
• upd: StackOp::s_type -> StackOp::Type