feat: split our api and implementation into seperate modules

[0utplay]

Motivation

We want to ensure that our api and implementation are split.

Modification

Our API is mostly dependency less now and the implementation is located in the corresponding impl modules.

Result

API and implementation are split properly.

[github-actions]

Test Results

 48 files  ± 0   48 suites  ±0   1m 30s ⏱️ -17s
432 tests +12  432 ✅ +12  0 💤 ±0  0 ❌ ±0 
763 runs  +12  763 ✅ +12  0 💤 ±0  0 ❌ ±0 

Results for commit 28fdaff. ± Comparison against base commit 790ec42.

This pull request removes 398 and adds 410 tests. Note that renamed tests count towards both.

eu.cloudnetservice.common.column.ColumnTextFormatterTest ‑ testDataFormatting()
eu.cloudnetservice.common.column.RowedFormatterTest ‑ testRowBasedFormatting()
eu.cloudnetservice.common.concurrent.CompletedTaskTest ‑ testFutureCompletedNormally()
eu.cloudnetservice.common.concurrent.CountingTaskTest ‑ testCountingTask()
eu.cloudnetservice.common.concurrent.ListenableTaskTest ‑ testTaskRunAndReset()
eu.cloudnetservice.common.concurrent.ListenableTaskTest ‑ testTaskRunAndResetExceptionTerminatesInstantly()
eu.cloudnetservice.common.concurrent.TaskUtilTest ‑ testFinishedFuture()
eu.cloudnetservice.common.concurrent.TaskUtilTest ‑ testFutureCompletedNormally()
eu.cloudnetservice.common.concurrent.TaskUtilTest ‑ testFutureExceptionalCompletion()
eu.cloudnetservice.common.concurrent.TaskUtilTest ‑ testFutureTimeout()
…

eu.cloudnetservice.driver.base.JavaVersionTest ‑ testNextAndUnsupportedAreHidden()
eu.cloudnetservice.driver.base.JavaVersionTest ‑ testResolveFromClassVersion()
eu.cloudnetservice.driver.base.JavaVersionTest ‑ testResolveFromMajor()
eu.cloudnetservice.driver.base.JavaVersionTest ‑ testRuntimeVersion()
eu.cloudnetservice.driver.base.JavaVersionTest ‑ testVersionGuessing()
eu.cloudnetservice.driver.base.JavaVersionTest ‑ testVersionRangeChecking()
eu.cloudnetservice.driver.impl.document.DocumentPropertyTest ‑ [1] {}
eu.cloudnetservice.driver.impl.document.DocumentSerialisationTest ‑ [1] {}
eu.cloudnetservice.driver.impl.document.DocumentSerialisationTest ‑ [1] {}, PRETTY
eu.cloudnetservice.driver.impl.document.DocumentSerialisationTest ‑ [2] {"test":1234,"world":5.999,"boolean":false,"hello":"world"}, COMPACT
…

♻️ This comment has been updated with latest results.