add support for utilizing npm package in ESM environments

[solpkr1]

• use --ts_proto_opt=esModuleInterop=true arg when generating with proto
• split esm / cjs into 2 seperate tsconfigs
• add npm run command to copy compiled encoding folder contents to esm/cjs
• add script to fix the imports in the ESM version

Tested with CJS / ESM / TS enviroments for Subsrbribing to transactions for a program account

"esModuleInterop": true is required in projects tsconfig.json compilerOptions

[WilfredAlmeida]

1. I've tested unary calls, accounts & transactions subscriptions and WASM parsing via the TypeScript example, it all works fine.
2. Users might need to set "esModuleInterop": true in their tsconfig.json if not already, otherwise they'll face errors

[fanatid]

looks good, thank you!