fix: enable tests in the test/utils.go file

[alexandear]

This PR renames test/utils.go to test/utils_test.go to enable two tests contained in the utils.go.

Before PR's change:

❯ go test -v ./test/... | grep -E '(TestLintName|TestLine)'
=== RUN   TestLineLengthLimit
--- PASS: TestLineLengthLimit (0.00s)

After:

❯ go test -v ./test/... | grep -E '(TestLintName|TestLine)'
=== RUN   TestLineLengthLimit
--- PASS: TestLineLengthLimit (0.00s)
=== RUN   TestLine
--- PASS: TestLine (0.00s)
=== RUN   TestLintName
--- PASS: TestLintName (0.00s)

[mgechev]

Looks like there are some conflicts. Could you rebase?

[alexandear]

@mgechev rebased

[chavacava]

Thank you @alexandear