Refactor line drawing to define quad thickness

[oznogon]

Define line widths for the new SeriousProton quad drawLine implementation in daid/SeriousProton#291.

Line thicknesses are generally 1 pixel, resulting in only anti-aliasing, with the exception of:

• Major heading tigs are now 2 pixels, minor tigs are 1.
• Missile tube indicators are 2 pixels.
• Movement vector indicators are 2 pixels.
• Zone borders are 4 pixels.
• GM screen chat box indicator lines are 2 pixels.

291 also scales the number of line segments used to draw circles to the circle's pixel size. Circles, especially large circles like radar outlines at high resolutions, should now be consistently drawn with few to no visible corners.

In testing on a low-end Intel N100 mini PC on Win11, FPS on Helms, Weapons, and Science remains 58-60 at 4k with no change in render times recorded. Testing on older low-end devices would be useful.

Before:

After:

[oznogon]

Backcompat concerns