[ELF,test] Add test for R_AARCH64_* implicit addends

to support certain static relocations in the REL format. See #87328 for
the armasm need.

Note: `R_AARCH64_{ABS64,PREL32,PREL64}` have been implemented by https://reviews.llvm.org/D120535

Pull Request: https://github.com/llvm/llvm-project/pull/87733