Add basics/account-data/poseidon

CONTRIBUTING.md

@@ -85,6 +85,10 @@ test = "pnpm ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"
 8. TypeScript, JavaScript and JSON files are formatted and linted using
    [Biome](https://biomejs.dev/). Execute the following command to format and lint your code at the root of this project before submitting a pull request:
 
+8. Some projects can be ignored from the building and testing process by adding the project name to the `.ghaignore` file.
+When removing or updating an example, please ensure that the example is removed from the `.ghaignore` file
+and there's a change in that example's directory.
+
 ```bash
 pnpm fix
 ```

basics/account-data/poseidon/Anchor.toml

@@ -0,0 +1,18 @@
+[toolchain]
+
+[features]
+resolution = true
+skip-lint = false
+
+[programs.localnet]
+account_data = "5p8KvdgFw7VygwT3J19dqDRDHDFUt6wKdDiA4s1kctdf"
+
+[registry]
+url = "https://api.apr.dev"
+
+[provider]
+cluster = "Localnet"
+wallet = "~/.config/solana/id.json"
+
+[scripts]
+test = "pnpm ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"

basics/account-data/poseidon/Cargo.toml

@@ -0,0 +1,14 @@
+[workspace]
+members = [
+    "programs/*"
+]
+resolver = "2"
+
+[profile.release]
+overflow-checks = true
+lto = "fat"
+codegen-units = 1
+[profile.release.build-override]
+opt-level = 3
+incremental = false
+codegen-units = 1

basics/account-data/poseidon/package.json

@@ -0,0 +1,22 @@
+{
+  "license": "ISC",
+  "scripts": {
+    "lint:fix": "prettier */*.js \"*/**/*{.js,.ts}\" -w",
+    "lint": "prettier */*.js \"*/**/*{.js,.ts}\" --check"
+  },
+  "dependencies": {
+    "@coral-xyz/anchor": "^0.30.1",
+    "@solana/web3.js": "^1.95.4"
+  },
+  "devDependencies": {
+    "@biomejs/biome": "1.9.4",
+    "@types/bn.js": "^5.1.0",
+    "@types/chai": "^4.3.0",
+    "@types/mocha": "^9.0.0",
+    "chai": "^4.3.4",
+    "mocha": "^9.0.3",
+    "prettier": "^2.6.2",
+    "ts-mocha": "^10.0.0",
+    "typescript": "^4.3.5"
+  }
+}