[cli] remove wildcard imports

[am357]

Issue #, if available: 481

Description of changes: Included the following changes:

1. Adds macOs coverage in cli's .gitignore.
2. Removes the redundant lines in build.gradle.
3. To increase the code readability, replaces the wildcard imports with explicit imports in cli package.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Merging #483 (95414fd) into main (06b4ee1) will increase coverage by 0.00%.
The diff coverage is 17.24%.

@@            Coverage Diff            @@
##               main     #483   +/-   ##
=========================================
  Coverage     82.44%   82.44%           
  Complexity     1330     1330           
=========================================
  Files           171      171           
  Lines         10906    10907    +1     
  Branches       1785     1785           
=========================================
+ Hits           8991     8992    +1     
  Misses         1368     1368           
  Partials        547      547           

Flag	Coverage Δ
CLI	20.86% <17.24%> (+0.26%)	⬆️
EXAMPLES	75.14% <ø> (ø)
LANG	84.84% <ø> (ø)
PTS	∅ <ø> (∅)
TEST_SCRIPT	79.68% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cli/src/org/partiql/cli/Repl.kt	0.00% <0.00%> (ø)
cli/src/org/partiql/cli/Runnable.kt	0.00% <ø> (ø)
cli/src/org/partiql/cli/functions/BaseFunction.kt	55.55% <ø> (ø)
cli/src/org/partiql/cli/functions/ReadFile.kt	77.27% <ø> (ø)
cli/src/org/partiql/cli/functions/WriteFile.kt	64.51% <ø> (ø)
cli/src/org/partiql/cli/main.kt	0.00% <ø> (ø)
cli/src/org/partiql/cli/stopwatch.kt	0.00% <ø> (ø)
cli/src/org/partiql/cli/streams.kt	50.00% <ø> (ø)
cli/src/org/partiql/cli/Cli.kt	90.47% <83.33%> (+0.47%)	⬆️

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[alancai98]

Looks good!