[skip-changelog] Migrate tests from test_core.py to core_test.go (#1949)

* Migrate TestCoreSearchNoArgs from test_core.py to core_test.go

* Migrate TestCoreUpdateIndexUrlNotFound from test_core.py to core_test.go

* Migrate TestCoreUpdateIndexInternalServerError from test_core.py to core_test.go

* Migrate TestCoreInstallWithoutUpdateIndex from test_core.py to core_test.go

* Migrate TestCoreDownload from test_core.py to core_test.go

* Migrate TestCoreInstall from test_core.py to core_test.go

* Migrate TestCoreUninstall from test_core.py to core_test.go

* Migrate TestCoreUninstallToolDependencyRemoval from test_core.py to core_test.go

* Migrate TestCoreZipslip from test_core.py to core_test.go

* Migrate TestCoreBrokenInstall from test_core.py to core_test.go

* Migrate TestCoreUpdateWithLocalUrl from test_core.py to core_test.go

* Migrate TestCoreSearchManuallyInstalledCoresNotPrinted from test_core.py to core_test.go

* Migrate TestCoreListAllManuallyInstalledCore from test_core.py to core_test.go

* Migrate TestCoreListUpdatableAllFlags from test_core.py to core_test.go

* Migrate TestCoreUpgradeRemovesUnusedTools from test_core.py to core_test.go

* Migrate TestCoreInstallRemovesUnusedTools from test_core.py to core_test.go

* Migrate TestCoreListWithInstalledJson from test_core.py to core_test.go

* Migrate TestCoreSearchSortedResults from test_core.py to core_test.go

* Migrate TestCoreListSortedResults from test_core.py to core_test.go

* Migrate TestCoreListDeprecatedPlatformWithInstalledJson from test_core.py to core_test.go

* Migrate TestCoreListPlatformWithoutPlatformTxt from test_core.py to core_test.go

* Migrate TestCoreWithMissingCustomBoardOptionsIsLoaded from test_core.py to core_test.go

* Migrate TestCoreListOutdatedCore from test_core.py to core_test.go

* Migrate TestCoreLoadingPackageManager from test_core.py to core_test.go

* Migrate TestCoreIndexWithoutChecksum from test_core.py to core_test.go

* Migrate TestCoreInstallEsp32 from test_core.py to core_test.go

* Migrate TestCoreSearchUpdateIndexDelay from test_core.py to core_test.go

* Migrate TestCoreDownloadMultiplePlatforms from test_core.py to core_test.go

* Migrate TestCoreInstallCreatesInstalledJson to core_test.go and delete test_core.py

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

* Update internal/integrationtest/core/core_test.go

Co-authored-by: Cristian Maglie <[email protected]>

Co-authored-by: Cristian Maglie <[email protected]>

Author: MatteoPologruto