Solana Prettier config

Let's share this Prettier config across all of our projects, to keep things consistent.

Installation

Install this package in the target project, along with the required peer dependencies
```
pnpx install-peerdeps@2 --pnpm --dev @solana/prettier-config-solana
```
Add a reference to this module in your package.json
```
"prettier": "@solana/prettier-config-solana"
```