Information and manual document assembly update

[Gumball2415]

Pull request format:

This pull request aims to update various information, refactor HTML coding, and improve document assembly.

This pull request corresponds to Dn-Programming-Core-Management/Dn-FamiTracker#401.

---

Changes:

• Reword module properties description (@Gumball2415 Information and manual document assembly update #16)
• Fix spellings of "GitHub" (@Gumball2415 Information and manual document assembly update #16)
• Declutter and update pattern editor descriptions (@Gumball2415 Information and manual document assembly update #16)
• Add description of hold instrument && command (@brickblock369 @Gumball2415 Could "Key H to add && instrument command" be added into the help manual? #14 Information and manual document assembly update #16)
  • This fixes Could "Key H to add && instrument command" be added into the help manual? #14.
• Fix and refactor table stylings (@Gumball2415 Information and manual document assembly update #16)
  • Sort Exx hardware length counter value table
  • Clarify 5B V0x command table
• Add more detailed expansion audio chip images (@Gumball2415 Information and manual document assembly update #16)
• Link GPLv2, GPLv3, and MIT-0 license texts (@Gumball2415 Information and manual document assembly update #16)
• Link to DPCM pitch table in DPCM import/editor page (@Gumball2415 Information and manual document assembly update #16)
• Update Namco 163 information (@Gumball2415 Information and manual document assembly update #16)
• Remove unused sound.htm page (@Gumball2415 Information and manual document assembly update #16)
• Explicitly mention licensing for Dn-help (@Gumball2415 Information and manual document assembly update #16)
• Add dedicated Python script for patching template files (@Gumball2415 Implement templating to reduce manual editing #9 Information and manual document assembly update #16)
  • This addresses Implement templating to reduce manual editing #9.
• Add description of exponential volume in 5B instruments page (@Gumball2415 Information and manual document assembly update #16)