feat(hpu): Add Hpu backend implementation

This backend abstract communication with Hpu Fpga hardware.
It define it's proper entities to prevent circular dependencies with
tfhe-rs.
Object lifetime is handle through Arc<Mutex<T>> wrapper, and enforce
that all objects currently alive in Hpu Hw are also kept valid on the
host side.

It contains the second version of HPU instruction set (HIS_V2.0):
* DOp have following properties:
  + Template as first class citizen
  + Support of Immediate template
  + Direct parser and conversion between Asm/Hex
  + Replace deku (and it's associated endianess limitation) by
  + bitfield_struct and manual parsing

* IOp have following properties:
  + Support various number of Destination
  + Support various number of Sources
  + Support various number of Immediat values
  + Support of multiple bitwidth (Not implemented yet in the Fpga
    firmware)

Details could be view in `backends/tfhe-hpu-backend/Readme.md`

_typos.toml

@@ -11,11 +11,13 @@ extend-ignore-identifiers-re = [
     # Example with string replacing "hello" with "herlo"
     "herlo",
     # Example in trivium
-    "C9217BA0D762ACA1"
+    "C9217BA0D762ACA1",
+    "0x[0-9a-fA-F]+"
 ]
 
 [files]
 extend-exclude = [
     "backends/tfhe-cuda-backend/cuda/src/fft128/twiddles.cu",
     "backends/tfhe-cuda-backend/cuda/src/fft/twiddles.cu",
+    "backends/tfhe-hpu-backend/config_store/**/*.link_summary",
 ]