[clang] [clang][analyzer] Add checker 'alpha.core.FixedAddressDereference' (PR #127191)

[Donát Nagy via cfe-commits]

https://github.com/NagyDonat requested changes to this pull request.

Overall I like the change, but I feel that the analyzer option name `suppress-all-address-spaces` is too misleading (see inline comment for more detailed suggestion).

https://github.com/llvm/llvm-project/pull/127191