Reviewed some camera functionality:
- Reviewed camera swinging (up-down movement)
- Reviewed camera tilting (left-right movement)
- Make movement independent of frame-rate
- removed unneeded variables
NOTE: Camera rotation has some speed issues on first person when fixed 60 fps are used: it moves too fast. Independent framerate movement is not properly implemented.
raylib modules have been slightly renamed to add some identity and note that they are independent modules that can be used as standalone separate parts of raylib if required.
The renamed modules are:
- `core` -> `rcore`
- `shapes` -> `rshapes`
- `textures` -> `rtextures`
- `text` -> `rtext`
- `models` -> `rmodels`
- `camera` -> `rcamera`
- `gestures` -> `rgestures`
- `core` -> `rcore`
All the build systems has been adapted to this change.
