disable 'maybe-uninitialized' compiler flag

in tests, examples and benchmarks - it produces many false-positives.

tests: add drd/memcheck suppressions

Taken from https://github.com/pmem/pmdk/commit/02762f3eba6f3f69f81343925c82db6b0200a426

inline_string: add missing specialization for total_sizeof

inline_string: implement copy assignment operator

Older compilers have problems with using assignment operator
from the base class.

[inline_string] Differentiate inline_string on PMEM and DRAM

instead of basic_inline_string so that there is no implicit
copy of inline_string when string_view is passed.

Authored by: Igor Chorazewicz

Fixes

tests: remove Testcase1 object before exiting from test.

it wasn't added during one of merge's.

ref. 1c37736e

next may be end() in case of the last key (or in case of concurrent erase).

CI: extend weekly runs with ASAN/UBSAN on fedora rawhide

Rename TESTS_USAN to TESTS_ASAN

[array] add c++20 initialization_list constructor

to match CMake option