(wip): add example tests instead of applications

[ndyakov]

instead of using example apps for testing, use tests to be able to generate reports

[github-actions]

Merging this branch will not change overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/redis/go-redis-entraid/examples/entraid/clientcert	0.00% (ø)
github.com/redis/go-redis-entraid/examples/entraid/clientsecret	0.00% (ø)
github.com/redis/go-redis-entraid/examples/entraid/defaultcredentials	0.00% (ø)
github.com/redis/go-redis-entraid/examples/entraid/managedidentity_systemassigned	0.00% (ø)
github.com/redis/go-redis-entraid/examples/entraid/managedidentity_systemassigned_min	0.00% (ø)
github.com/redis/go-redis-entraid/examples/entraid/managedidentity_userassigned	0.00% (ø)
github.com/redis/go-redis-entraid/manager	96.28% (ø)

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Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/redis/go-redis-entraid/manager/token_manager.go	100.00% (ø)	7	7	0

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.

Changed unit test files

• github.com/redis/go-redis-entraid/examples/entraid/clientcert/example_test.go
• github.com/redis/go-redis-entraid/examples/entraid/clientsecret/example_test.go
• github.com/redis/go-redis-entraid/examples/entraid/defaultcredentials/example_test.go
• github.com/redis/go-redis-entraid/examples/entraid/managedidentity_systemassigned/example_test.go
• github.com/redis/go-redis-entraid/examples/entraid/managedidentity_systemassigned_min/example_test.go
• github.com/redis/go-redis-entraid/examples/entraid/managedidentity_userassigned/example_test.go