Physics: Add functions for vector conversion
Filesystem: Create implementation for IBufferedStream

Added class CBufferedStream
Graphics: Add IRenderingDevice stub
Graphics: Minor steps towards revamp hrggraphics

o Add stubs for Vertex Primitives
o Some minor changes
o Code normalization
Filesystem: Make mess in HNDF parser
Merge branch 'master' of https://github.com/Huddayn/hrengin