Add more realistic missile dynamics

[TheCandianVendingMachine]

Overview

When merged this pull request will:

• Add real navigation profiles to all missiles. Uses something called "proportional navigation" - a control theory that suggests that as long as your line of sight angle isn't changing you are guaranteed to be on a collision course (See this video for a demonstration within World in Conflict). This automatically leads targets and allows for insane accuracy. This picture shows a javelin attacking an incorrectly scripted target (getPos instead of centerOfMass) which was moving at 100kmh at a distance of 2km at a firing angle of 90 degrees

Navigation types:

• Direct Line of Sight
• Proportional Navigation
• Augmented Proportional Navigation (takes into account target acceleration)
• Zero-Effort Miss (separate form of proportional navigation that allows for a more efficient intercept)

Changes flight model of weapons to utilise in-engine calculations of velocity. This avoids issues where the missile will lose all of its energy and hang in the air. This also allows for "bang-bang" guidance weapons, such as the GBU-12.

Merge Strategy

Merge all of the associated missile guidance PR's alongside this. This PR does not fix the existing implementations, so master will be broken. Merge the following alongside:

TBD

Misc

To-Do

• Localisation
• Documentation
• Add NLAW navigation type
• Add SACLOS/Beam guided navigation type
• Add Hellfire mid-course guidance logic
• Tweak Javelin mid-course guidance logic
• Fix RPT spam through IR seeker when close to target
• Create UX for selecting GPS attack profile/mission (Between PP and TOO, and between PP missions)
• Add ground based missiles (see todo.txt)
• Multiplayer testing
• Multiplayer tweaking
• Convert all tabs to spaces (text editor reset settings apparently)
• Add videos of this system in action

Videos:
https://youtu.be/5MrPyqcZc0I
https://youtu.be/WF9K1GitV00
https://youtu.be/xXSJLwrJW1A
https://youtu.be/E9O9M5OcxdU
https://youtu.be/_v6BdAw-MA0

[TheCandianVendingMachine]

Good to review again

[TheCandianVendingMachine]

Updated, now is #10019