[R] Add developer guide about handling of parameters in R #11528

Job	Run time
Build libxgboost4j.so with CUDA	6m 8s
Build libxgboost4j.dylib for MacOS (Apple Silicon)	1m 53s
Build libxgboost4j.so targeting glibc 2.17 (arch aarch64, runner linux-arm64-cpu)	1m 36s
Build libxgboost4j.dylib for MacOS (Intel)	2m 51s
Build and test JVM packages (Linux, Scala 2.12)	10m 21s
Build libxgboost4j.so targeting glibc 2.17 (arch x86_64, runner linux-amd64-cpu)	1m 51s
Build and test JVM packages (Linux, Scala 2.13)	5m 5s
Build and test JVM packages (windows-latest)	9m 48s
Build and test JVM packages (macos-13)	9m 47s
Build docs for JVM packages	5m 4s
Test JVM packages with CUDA (Scala 2.12)	6m 14s
Test JVM packages with CUDA (Scala 2.13)	6m 15s
Deploy JVM packages to S3 (cpu)	7s
Deploy JVM packages to S3 (cpu)	8s
Deploy JVM packages to S3 (gpu)	10s
Deploy JVM packages to S3 (gpu)	8s
	1h 7m 26s

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