feat(#192): add WithRowBorder and WithOuterBorder

[wheelibin]

Summary

• WithRowBorder(true) adds an inner border to the cells, giving a grid-like appearance.
• WithOuterBorder(false) hides the outer border.

Feature requested in #192

Example

Default border:
┏━━━━━━━━━━━━┳━━━━━━━━━━┳━━━━━━┓
┃        Name┃   Element┃    HP┃
┣━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━┫
┃   Bulbasaur┃     Grass┃    45┃
┣━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━┫
┃  Charmander┃      Fire┃    39┃
┣━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━┫
┃    Squirtle┃     Water┃    44┃
┣━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━┫
┃     Pikachu┃  Electric┃    35┃
┗━━━━━━━━━━━━┻━━━━━━━━━━┻━━━━━━┛

No outer border (3/3)

        Name┃   Element┃    HP
━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━
   Bulbasaur┃     Grass┃    45
━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━
  Charmander┃      Fire┃    39
━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━
    Squirtle┃     Water┃    44
━━━━━━━━━━━━╋━━━━━━━━━━╋━━━━━━
     Pikachu┃  Electric┃    35