add new files

Author: kmurphypolygon

docs/tools/dApp-development/launchpad/frontend.md

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+dApp Launchpad is an automated CLI tool for initializing, creating, and deploying a fully-integrated web3 dApp project.
+
+dApp projects are divided into two parts:
+
+- [Frontend](frontend.md): The frontend runs on Next.js. 
+- [Smart contracts](smart-contracts.md): The smart contracts use a Hardhat environment.
+
+The tool automates basic activity such as auto-updating contract artifacts, (re)deploying contracts on code changes, and Hot Module Replacement (HMR) for frontend code changes, and more.

docs/tools/dApp-development/launchpad/intro.md

@@ -423,6 +423,10 @@ nav:
   - Developer tools: 
       - Developer tools: tools/index.md
       - dApp development: 
+          - dApp Launchpad:
+              - Introduction: tools/dApp-development/launchpad/intro.md
+              - Frontend: tools/dApp-development/launchpad/frontend.md
+              - Smart contracts: tools/dApp-development/launchpad/smart-contracts.md
           - Smart contract development on PoS:
               - Alchemy: tools/dApp-development/pos/alchemy.md
               - ChainIDE: tools/dApp-development/pos/chainide.md