add a lot of small changes to make the LRU cache more usable and standard compliant#32

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RokerHRO wants to merge 7 commits intolamerman:masterfrom

RokerHRO:master

Commits on Mar 2, 2025

minor refactorings, add 'noexcept', 'explicit' etc.
Lars H. Rohwedder
committed
get/set max_size
Lars H. Rohwedder
committed
add support for move() the value. TODO: move() the key requires set<> instead of map<>.
Lars H. Rohwedder
committed
add remove()
Lars H. Rohwedder
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make lru_cache uncopyable, because the iterators in map would not match in the copy. TODO: implement deep copy.
Lars H. Rohwedder
committed
add clear()
Lars H. Rohwedder
committed
add touch(). rename #include guards to ISO C++ compliant names
Lars H. Rohwedder
committed