[2026.1] More accurate U-Boats characteristics: Speed & Charge overhaul

NEW COMPANY REQUIRED. This mod changes the characteristics of Type II, VII and IX submarines: 1) speed of boats in underwater position on electric motors are brought to historical values. 2) battery discharge as a function of speed are brought to historical values. 3) battery charging. Now more details about each function: Discharging batteries (These values ​​may not be entirely historical, but it's worth considering that boats can have their batteries upgraded, which will change these values) Type VII|Type IX(batteries without upgrade, officer on electric motors + two sailors) Gear position Time to full discharge Stopp ~38h Kleine Fahrt voraus (Dead Slow Ahead) ~29h Langsame Fahrt voraus (Slow Ahead) ~19h Halbe Fahrt voraus (Half Ahead) ~11h GroBe Fahrt voraus (Full Ahead) ~2. 5h AK voraus (Flank Ahead) ~35m Kleine Fahrt zuruck (Dead Slow Astern) ~27h Langsame Fahrt zuruck (Slow Astern) ~18h Halbe Fahrt zuruck (Half Astern) ~5. 5h AK zuruck (Flank Astern) ~1h Type II(batteries without upgrade, officer on diesels + two sailors) Gear position Time to full discharge Stopp ~38h Kleine Fahrt voraus (Dead Slow Ahead) ~25h Langsame Fahrt voraus (Slow Ahead) ~15h Halbe Fahrt voraus (Half Ahead) ~8h GroBe Fahrt voraus (Full Ahead) ~1. 5h AK voraus (Flank Ahead) ~22m Kleine Fahrt zuruck (Dead Slow Astern) ~24h Langsame Fahrt zuruck (Slow Astern) ~14h Halbe Fahrt zuruck (Half Astern) ~4h AK zuruck (Flank Astern) ~42m Submarine speeds Type VII Gear position Speed Kleine Fahrt voraus (Dead Slow Ahead) ~1. 5kt Langsame Fahrt voraus (Slow Ahead) ~3. 1kt Halbe Fahrt voraus (Half Ahead) ~4. 4kt GroBe Fahrt voraus (Full Ahead) ~6. 5kt AK voraus (Flank Ahead) ~7. 7kt Kleine Fahrt zuruck (Dead Slow Astern) ~1. 4kt Langsame Fahrt zuruck (Slow Astern) ~2. 5kt Halbe Fahrt zuruck (Half Astern) ~3. 5kt AK zuruck (Flank Astern) ~5. 2kt Type II Gear position Speed Kleine Fahrt voraus (Dead Slow Ahead) ~1. 5kt Langsame Fahrt voraus (Slow Ahead) ~2. 9kt Halbe Fahrt voraus (Half Ahead) ~4. 2kt GroBe Fahrt vo