le sweep in buffet calculation is now calculated at mac

Improvements in buffet calculation

Description

LE sweep for buffet is now calculated at mac and not at wing root with 0° sweep in fuselage segment

Related Issue(s)

• Fixes [#53 (closed)]

Additional Notes

@tum, look if this change satisfies your higer AoA in cruise request

requested review from @gPauls-TUHH

assigned to @Moritz.barnert, @tobi747, @lukas.neuerburg, @maren.huxel, @meric.taneri, and @gPauls-TUHH

requested review from @Moritz.barnert