add a font size option

• ask text size input from user..

• footnotes cross references etc should be relative to that

• | Add option to adjust font size | Analysis | Bible Glyph | 4 | Alphin | | | 4 |

• |   | Implementation | Bible Glyph | 6 | Alphin | | | 6 |

• |   | Testing | Bible Glyph | 1 | Alphin | | | 1 |

• |   | Code review | Bible Glyph | 0.5 | Athulya | | | 0.5 |

• |   | Modification | Bible Glyph | 2 | Alphin | | | 2 |