feat(compressors): add neural compression modules and training pipeline

mini-nav/compressors/int_compressor.py

@@ -0,0 +1,9 @@
+import torch.nn as nn
+
+
+class IntCompressor(nn.Module):
+    def __init__(self):
+        super().__init__()
+
+    def forward(self, x):
+        pass