Backend refactor (#120)

* remove spqlios, split cpu_ref and cpu_avx into different crates

* remove spqlios submodule

* update crate naming & add avx tests

poulpy-cpu-ref/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "poulpy-cpu-ref"
+version = "0.3.2"
+edition = "2024"
+license = "Apache-2.0"
+readme = "README.md"
+description = "The providing concrete implementations of poulpy-hal through its open extension points and reference cpu code"
+repository = "https://github.com/phantomzone-org/poulpy"
+homepage = "https://github.com/phantomzone-org/poulpy"
+documentation = "https://docs.rs/poulpy"
+
+[dependencies]
+poulpy-hal = {workspace = true}
+rug = {workspace = true}
+criterion = {workspace = true}
+itertools = {workspace = true}
+rand = {workspace = true}
+rand_distr = {workspace = true}
+rand_core = {workspace = true}
+byteorder = {workspace = true}
+once_cell = {workspace = true}
+rand_chacha = {workspace = true}
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+
+[[bench]]
+name = "vmp"
+harness = false