[Repo Assist] Add /// doc comments to SymbolReader.fs, TypeFormatter.fs, and ProjectCracker.fs (issue #1035) (#1074)

* Add /// doc comments to SymbolReader.fs, TypeFormatter.fs, and ProjectCracker.fs (issue #1035)

- SymbolReader.fs: module doc, ReadingContext fields/members, and all key
  functions (readMemberOrVal, readUnionCase, readFSharpField, readAttribute,
  readMarkdownCommentAsHtml, readXmlElementAsHtml, readXmlCommentAsHtmlAux,
  readCommentAndCommands, readCommentsInto, readType, readAssembly, etc.)
- TypeFormatter.fs: module doc and all public-facing functions
  (formatTypeAsHtml, formatConstraintAsText, formatCurriedArgsUsageAsHtml,
  formatTypeApplicationAsHtml, formatDelegateSignatureAsHtml, etc.)
- ProjectCracker.fs: module docs for Utils, DotNetCli, Crack; all utility
  helpers (getDotnetHostPath, cacheBinary, ensureDirectory, etc.) and
  CrackedProjectInfo type; crackProjectFile, crackProjects, etc.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* ci: trigger checks

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: github-actions[bot]