[New Sample] Add cv samples with argmax operators

paddle_samples/PaddleX/BlazeFace/subgraph_7/graph_hash.txt

@@ -0,0 +1 @@
+18a852ad880473507191eb54f8a8608f811a784a84fe0bbffea60b8d2672dafc

paddle_samples/PaddleX/BlazeFace/subgraph_7/graph_net.json

@@ -0,0 +1,6 @@
+{
+    "framework": "paddle",
+    "model_name": "BlazeFace",
+    "num_devices_required": 1,
+    "num_nodes_required": 1
+}

paddle_samples/PaddleX/BlazeFace/subgraph_7/input_meta.py

@@ -0,0 +1,83 @@
+class Program_weight_tensor_data_0:
+    name = "data_0"
+    shape = [4, 12800, 4]
+    dtype = "float32"
+    min_val = float("-5.16022")
+    max_val = float("9.99565")
+    mean = float("0.199758")
+    std = float("1.08608")
+    data = None
+
+
+class Program_weight_tensor_data_1:
+    name = "data_1"
+    shape = [4, 9600, 4]
+    dtype = "float32"
+    min_val = float("-4.81517")
+    max_val = float("5.22088")
+    mean = float("-0.0449079")
+    std = float("1.06453")
+    data = None
+
+
+class Program_weight_tensor_data_2:
+    name = "data_2"
+    shape = [4, 12800, 2]
+    dtype = "float32"
+    min_val = float("-7.10677")
+    max_val = float("7.10966")
+    mean = float("-0.00799267")
+    std = float("2.00454")
+    data = None
+
+
+class Program_weight_tensor_data_3:
+    name = "data_3"
+    shape = [4, 9600, 2]
+    dtype = "float32"
+    min_val = float("-9.31402")
+    max_val = float("9.31491")
+    mean = float("9.33382e-05")
+    std = float("2.34683")
+    data = None
+
+
+class Program_weight_tensor_data_4:
+    name = "data_4"
+    shape = [4, 90, 4]
+    dtype = "float32"
+    max_val = float("0.994016")
+    mean = float("0.151741")
+    std = float("0.272922")
+    data = None
+
+
+class Program_weight_tensor_data_5:
+    name = "data_5"
+    shape = [4, 90]
+    dtype = "int32"
+    min_val = 0
+    max_val = 0
+    data = None
+
+
+class Program_weight_tensor_data_6:
+    name = "data_6"
+    shape = [12800, 4]
+    dtype = "float32"
+    min_val = float("-0.0125")
+    max_val = float("1.0125")
+    mean = float("0.5")
+    std = float("0.289092")
+    data = None
+
+
+class Program_weight_tensor_data_7:
+    name = "data_7"
+    shape = [9600, 4]
+    dtype = "float32"
+    min_val = float("-0.0875")
+    max_val = float("1.0875")
+    mean = float("0.5")
+    std = float("0.295452")
+    data = None