`struct/clipspace/project_*.h` headers are broken

[Valeri]

Issues with them:

1. Do not include corresponding array headers
2. Have dest argument, resulting in redeclaration
3. glms_project_z_* has return type vec3s instead of expected float

[Valeri]

Problem 1 seems to happen with all struct clipspace headers - none of them include corresponding array API headers, resulting in errors if those headers are not included as a side effect.

[Recep Aslantas]

Hi @v1993,

You seems to be correct, we need fix them asap

Any time to fix them or I'll do it asap?