Clean up the ci/ directory. This means getting rid of the travis/ path completely and moving the files into sensible subdirectories.
Details:
- Moves everything under ci/travis into subdirectories, e.g. ci/build, ci/lint, etc.
- Minor adjustments to some scripts (variable renames)
- Removes the outdated (unused) asan tests
* Fix SC2006: Use $(...) notation instead of legacy backticked `...`.
* Fix SC2016: Expressions don't expand in single quotes, use double quotes for that.
* Fix SC2046: Quote this to prevent word splitting.
* Fix SC2053: Quote the right-hand side of == in [[ ]] to prevent glob matching.
* Fix SC2068: Double quote array expansions to avoid re-splitting elements.
* Fix SC2086: Double quote to prevent globbing and word splitting.
* Fix SC2102: Ranges can only match single chars (mentioned due to duplicates).
* Fix SC2140: Word is of the form "A"B"C" (B indicated). Did you mean "ABC" or "A\"B\"C"?
* Fix SC2145: Argument mixes string and array. Use * or separate argument.
* Fix SC2209: warning: Use var=$(command) to assign output (or quote to assign string).
Co-authored-by: Mehrdad <noreply@github.com>
