Enhance sqlpath.Glob to actually support glob wildcard

[iamwavecut]

This PR enhances the Glob function in the internal/sqlpath package to support glob patterns in the input paths. It also adds comprehensive tests for the Glob function, ensuring its correct behavior and in various scenarios, as well as protects it from regressions.

Problem

I want sqlc to be able to collect queries from different modules of my applications:

...
sql:
  - engine: "postgresql"
    queries: "modules/*/sql"
...

Epected:

Normal execution.

Actual:

error parsing queries: path /home/masked/project/internal/modules/*/sql does not exist

• internal/sql/sqlpath/read_test.go: Introduced a new test file with multiple test cases for the Glob function. These tests cover various scenarios like handling of SQL files, non-SQL files, hidden files, non-existent paths, unreadable directories, and symlinks.

• internal/sql/sqlpath/read.go: Added a new function expandGlob s to expand glob patterns in the input paths. The Glob function now calls expandGlob s before processing the paths. Also, added error handling for cases where the path does not exist or is not a file.

• internal/sql/sqlpath/testdata/: Dummy directory of files and symlinks to test various scenarios.

[iamwavecut]

@sqlc-dev please take a look

[kyleconroy]

@iamwavecut I made a few changes to the PR. I remove the nolint comment, as we don't use those anywhere in the codebase. I only call filepath.Glob if the path contains ?*[]. It's easier to preserve existing behavior this way.

I also changed the error messages to include the info from os.Stat. This information isn't as useful as the results from lstat, but it is more consistent across platforms.

[iamwavecut]

@kyleconroy Sure! Thanks for the improvements.

[iamwavecut]

Is there a chance that I'll see this released anytime soon? @kyleconroy

[kyleconroy]

@iamwavecut This will be released in 1.24.0 sometime next week.