Update doc with new resistance info; disseminate info

[fso42]

• https://docs.avaframe.org/en/latest/theoryCom1DFA.html#resistance -> @fso42

• https://docs.avaframe.org/en/latest/com1DFAAlgorithm.html#take-entrainment-into-account -> Add section take resistance into account -> @awirb

• https://docs.avaframe.org/en/latest/DFAnumerics.html#added-resistance-force -> @awirb

• https://docs.avaframe.org/en/latest/theoryCom1DFA.html#resistance -> @awirb