feat: Add column headings for sections in INP file

[YuChunTsao]

This commit includes the following changes:

• Column headings have been added for each section in the INP file.
• The alignment of the values has been updated to match these headings.

These enhancements improve readability and understanding of the INP file.

[LRossman]

@YuChunTsao I have two suggestions:

1. Use two semi-colons (;;) instead of just one to begin each heading line. This will make it easier for an input parser to identify a heading line and not confuse it with a comment.
2. Change the "Factors" column heading in the [PATTERNS] section to "Multipliers" since that is the term used in the manual and the GUI.

[YuChunTsao]

@LRossman

Thank you for your suggestions.

1. I've added two semicolons at the start of each heading line.
2. After reviewing the code, I noticed that Multipliers had already been used in the [PATTERNS] section as per commit 317990a.