feat: DFMM kit Rust crate (#5)

* feat: dfmm kit
* feat: `Pool` struct and impls
* feat: README.md
* fix: the swap_data

---------

Co-authored-by: Waylon Jepsen <57912727+0xJepsen@users.noreply.github.com>

.github/workflows/rust.yaml

@@ -0,0 +1,63 @@
+name: rust
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: install rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+      - name: test
+        run: cargo test --workspace --all-features
+
+  clippy:
+    name: clippy
+    runs-on: ubuntu-latest
+
+    steps:
+        - uses: actions/checkout@v3
+
+        - name: install rust toolchain
+          uses: actions-rs/toolchain@v1
+          with:
+            toolchain: 1.75.0
+            components: clippy
+        - name: cargo clippy
+          run: cargo clippy --workspace --all-features -- -D warnings
+
+  udeps:
+    name: udeps
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v3
+        - name: install rust toolchain
+          uses: actions-rs/toolchain@v1
+          with:
+            toolchain: nightly
+        - name: install udeps
+          run: cargo install --git https://github.com/est31/cargo-udeps --locked
+        - name: cargo udeps
+          run: cargo +nightly udeps
+
+  fmt:
+    name: fmt
+    runs-on: ubuntu-latest
+
+    steps:
+        - uses: actions/checkout@v3
+
+        - name: install rust toolchain
+          uses: actions-rs/toolchain@v1
+          with:
+            toolchain: nightly
+            components: rustfmt
+        - name: cargo fmt
+          run: cargo +nightly fmt --all -- --check          

.gitignore

@@ -2,4 +2,11 @@
 cache
 out
 optimized-out
-.env
+
+# Rust
+kit/target
+target
+
+# VSCode
+.vscode
+.env