[💡 FEATURE REQUEST]: Actualize RR plugins samples

[rustatian]

Plugin

None

I have an idea!

Actualize RR samples repository:

• Add more complex samples, for example, performing RPC call from PHP to RR.
• Add videos to README.md.
• Add samples of creating custom drivers (KV, JOBS).
• Add samples of the middleware, interceptors.
• How to debug Go+PHP code? (Extend debugging page in docs, attach link to the README)