xo'ai _SE experimental cmavo

conversion: move/promote 5th place to 1st position. Everything else stays in the same order.

Before: x1 x2 x3 x4 x5, after: x5 x1 x2 x3 x4. Has the same effect as "xe ve te se". Proposed rafsi: -xoz- See also to'ai, vo'ai.

In notes:

xozbe'i: x₁=b₅ is the means/medium by which x₂=b₁ transfers/sends/transmits x₃=b₂ to receiver x₄=b₃ from transmitter/origin x₅=b₄.
se'ai'e (exp!): (n, 1, 2, \dots, n-2, n - 1)st conversion.
to'ai (exp!): conversion: move/promote ['drag-and-drop'] 3rd place to 1st position. Everything else stays in the same order.
vo'ai (exp!): conversion: move/promote 4th place to 1st position. Everything else stays in the same order.