Add tasks for all the new languages

Task/OpenGL/Nim/opengl.nim

@@ -0,0 +1,39 @@
+import opengl, glut
+
+proc paint() {.cdecl.} =
+  glClearColor(0.3,0.3,0.3,0.0)
+  glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT)
+
+  glShadeModel(GL_SMOOTH)
+
+  glLoadIdentity()
+  glTranslatef(-15.0, -15.0, 0.0)
+
+  glBegin(GL_TRIANGLES)
+  glColor3f(1.0, 0.0, 0.0)
+  glVertex2f(0.0, 0.0)
+  glColor3f(0.0, 1.0, 0.0)
+  glVertex2f(30.0, 0.0)
+  glColor3f(0.0, 0.0, 1.0)
+  glVertex2f(0.0, 30.0)
+  glEnd()
+
+  glFlush()
+
+proc reshape(width, height) {.cdecl.} =
+  glViewport(0, 0, width, height)
+  glMatrixMode(GL_PROJECTION)
+  glLoadIdentity()
+  glOrtho(-30.0, 30.0, -30.0, 30.0, -30.0, 30.0)
+  glMatrixMode(GL_MODELVIEW)
+
+enableAutoGlErrorCheck(false)
+loadExtensions()
+glutInit()
+glutInitWindowSize(640, 480)
+discard glutCreateWindow("Triangle")
+
+glutDisplayFunc(paint)
+glutReshapeFunc(reshape)
+
+glutMainLoop()