take out raw rule manipulation from grammar structures

alib2algo/src/grammar/generate/GenerateUpToLength.h

alib2algo/src/grammar/properties/NonterminalUnitRuleCycle.h

alib2algo/src/grammar/properties/NullableNonterminals.h

alib2algo/src/grammar/properties/ProductiveNonterminals.h

alib2algo/src/grammar/properties/RecursiveNonterminal.h

alib2algo/src/grammar/properties/UnreachableSymbols.h

alib2algo/src/grammar/simplify/EpsilonRemover.h

alib2algo/src/grammar/simplify/SimpleRulesRemover.h

alib2algo/src/grammar/simplify/ToCNF.cpp

alib2algo/src/grammar/simplify/UnproductiveSymbolsRemover.h

alib2algo/src/grammar/simplify/UnreachableSymbolsRemover.h

alib2algo/src/regexp/convert/ToGrammarRightRGGlushkov.cpp

alib2algo_experimental/src/grammar/parsing/First.h

alib2algo_experimental/src/grammar/parsing/Follow.h

alib2algo_experimental/src/grammar/parsing/LL1ParseTable.h

...2algo_experimental/test-src/grammar/parsing/FirstTest.cpp

alib2data/src/grammar/AddRawRule.cpp

alib2data/src/grammar/AddRawRule.h

alib2data/src/grammar/ContextFree/CFG.h

alib2data/src/grammar/ContextFree/CNF.h