Wildebeest spell checking in copilot server

[ryderwishart]

• [x] Wildebeest analyzes text
• [x] We check for close-edit-distance words and report that they may be typos
  • this should happen onDocumentChanged, and only if the last character was a whitespace-type char
• [x] two Quick-fix options (Ideas) for possible typos: correct to similar spelling, or add to dictionary
• [x] When highlighting a longer string with multiple words, a quick fix should be 'add all to dictionary'
• [x] Synchronize with @CalJosKos's efforts to ensure the same workspace/drafts/*.dictionary file extension and data format is being utilized
• [x] Perform spell check on lines that include vrefs
• [x] Ignore vrefs in spell checking

Dictionary data format (simple version)

"entries": [
  { "headWord": "word"},
]

[ryderwishart]

I've noticed the spell check is not always filtering out the punctuation in the quick-fix suggestion (it still updates the dictionary correctly, but the quick fix suggestion includes the punctuation).