Use fuzzy string matching for similar project name detection

Describe the feature
Use fuzzy string matching for project name matching (see #979).

Who is this feature for?
When users create a new project, #979 uses simple string.Contains logic to look for projects with similar names. But Postgres has a built-in feature for fuzzy string matching using Levenshtein distance; you just have to enable the extension in your ModelBuilder configuration. We might want to improve the project-name matching by using fuzzy string matching to find similar projects.

There's even a version that makes the search efficient: you define a maximum distance, and as soon as Postgres determines that the actual distance would be larger, it stops calculating. So you can write FuzzyStringMatchLevenshteinLessEqual(needle, haystack, 5) <= 5 and get a list of similar strings without wasting too much time on dissimilar ones.

Pages affected
Project creation page