dev: use objcopy to generate split debug symbol

[Enter-tainer]

• Are dwp files the right choice for split-debuginfo=packed on Linux? rust-lang/rust#105991
• debuginfo: Add support for split-debuginfo on platforms that allow it rust-lang/rust#34651 (comment)
• https://maskray.me/blog/2022-10-30-distribution-of-debug-information
• https://internals.rust-lang.org/t/help-test-faster-incremental-debug-macos-builds-on-nightly/14016
• https://llvm.org/docs/CommandGuide/dsymutil.html

[Enter-tainer]

A quick memo about how dbginfo works in different platform:

• Windows: dbginfo is splitted by default. Just use the pdf file next to the binary
• Linux: dbginfo is stored in the binary. use llvm-objcopy to extract debuginfo from binary and strip them from binary
• Macos: dbginfos are scattered in target/release/deps. Use dsymutil to merge them.

cc @Myriad-Dreamin FYI