feat: initialize crypto_clash_contract with TypeScript, Hardhat, and deployment script

- Added package.json with scripts for compiling, deploying, and testing the contract.
- Created deploy.ts script for deploying the HelloWorld contract and saving the contract address to config.json.
- Configured TypeScript with tsconfig.json for Node.js environment and ES module support.

crypto_clash_contract/contracts/testcontract.sol

@@ -0,0 +1,31 @@
+// Specifies the version of Solidity, using semantic versioning.
+// Learn more: https://solidity.readthedocs.io/en/v0.5.10/layout-of-source-files.html#pragma
+pragma solidity >=0.7.3;
+
+// Defines a contract named `HelloWorld`.
+// A contract is a collection of functions and data (its state). Once deployed, a contract resides at a specific address on the Ethereum blockchain. Learn more: https://solidity.readthedocs.io/en/v0.5.10/structure-of-a-contract.html
+contract HelloWorld {
+
+   //Emitted when update function is called
+   //Smart contract events are a way for your contract to communicate that something happened on the blockchain to your app front-end, which can be 'listening' for certain events and take action when they happen.
+   event UpdatedMessages(string oldStr, string newStr);
+
+   // Declares a state variable `message` of type `string`.
+   // State variables are variables whose values are permanently stored in contract storage. The keyword `public` makes variables accessible from outside a contract and creates a function that other contracts or clients can call to access the value.
+   string public message;
+
+   // Similar to many class-based object-oriented languages, a constructor is a special function that is only executed upon contract creation.
+   // Constructors are used to initialize the contract's data. Learn more:https://solidity.readthedocs.io/en/v0.5.10/contracts.html#constructors
+   constructor(string memory initMessage) {
+
+      // Accepts a string argument `initMessage` and sets the value into the contract's `message` storage variable).
+      message = initMessage;
+   }
+
+   // A public function that accepts a string argument and updates the `message` storage variable.
+   function update(string memory newMessage) public {
+      string memory oldMsg = message;
+      message = newMessage;
+      emit UpdatedMessages(oldMsg, newMessage);
+   }
+}