Heavy renaming for package net.epsilony.tsmf.process

  - Project -> WeakformTask
    + PolygonProject2D -> PolygonTask2D
    + RectangleProject -> RectangleTask
    + TimoshenkoStandardProject -> TimoshenkoStandardTask
  - ProcessPoint -> TaskUnit
  - WFProcess2D -> WeakformProcessor2D
  - ProcessPack -> WeakformProject