Add mascot pattern generator script

[Dreamstore2046]

Summary

Adds a dependency-free Perl mascot pattern generator that emits a Markdown craft pattern from user-provided feature ratios, yarn weight, finished height, and craft style.

What changed

• Added scripts/generate_mascot_pattern.pl
• Added docs/mascot-pattern-generator.md
• Added a README entry with a sample command

Features

• --banana, --goose, and --goblin ratio inputs
• --craft crochet|knit
• yarn-weight scaling for lace, sport, dk, worsted, and bulky
• finished-height scaling
• Markdown output to stdout or --output PATH
• generated materials list, gauge notes, body instructions, feature pieces, and assembly steps

Validation

• git diff --check passes
• Perl runtime is not installed in my current local environment, so I could not run perl -c scripts/generate_mascot_pattern.pl locally. The script only uses core Perl modules: strict, warnings, Getopt::Long, and POSIX.

Closes #134.

[prufrax]

This is looking good, but we need to support crafters all around the world. In particular, crocheters in the UK and USA are known to use the same terms but for completely different stitches, which can cause confusion! Add a parameter that selects which country's crafting terminology is used in the output document,

Given the existing push to add documentation in emoji elsewhere in the project - see issue #116 for details - we also need a parameter to select generating the output document using emojis instead of English.

[Dreamstore2046]

Thanks, that makes sense. I pushed a follow-up commit for this.

It adds --terminology us|uk for crochet wording, so UK output uses double crochet (dc) where the US version uses single crochet (sc). It also adds --emoji for an emoji-instruction version of the generated pattern.

I updated the README and docs example to show both flags as well.