Support for FlySystem V3

What's Changed

• Support for Psr7^2.0.0 by @erikn69 in #39
• Drop support for Guzzle\Psr7 <1.7 by @erikn69 in #51
• Support FlySystem ^3.0 by @erikn69 in #52

Full Changelog: v2.0.2...v2.1.0

Flysystem V2: token refresh bugfix, PSR-4 cleanup

Merge pull request #48 from masbug/analysis-Rv9Gkx

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Flysystem V1: token refresh bugfix, PSR-4 cleanup

Merge pull request #49 from masbug/analysis-Yj7bwY

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Permanent delete, auto access token refresh, Psr7^2.0.0 support

Changelog (improvements & fixes by @erikn69):

• added convenience functions: emptyTrash, uncacheFolder, getService
• added usePermanentDelete optional parameter: it controls whether adapter deletes files permanently or puts them in the trash bin (autodeleted after 30 days)
• added automatic access token refreshing (useful for long running tasks)
• added compatibility with Psr7^2.0.0

Thanks Erik!

Flysystem V1: Permanent delete, auto access token refresh, Psr7^2.0.0 support

Changelog (improvements & fixes by @erikn69):

• added convenience functions: emptyTrash, uncacheFolder, getService
• added usePermanentDelete optional parameter: it controls whether adapter deletes files permanently or puts them in the trash bin (autodeleted after 30 days)
• added automatic access token refreshing (useful for long running tasks)
• added compatibility with Psr7^2.0.0

Thanks Erik!

Support for Flysystem V2

Support for Flysystem API V2 was implemented by @erikn69. Thank you Erik!

Merged fixes by @erikn69

Changelog (fixes by @erikn69):

• fixed character sanitization
• added functionality to clear the cache on demand
• added basic tests

PHP 8+ support

• PHP8+ support by @erikn69

Access token refresh fix

Fix provided by @erikn69:

• correctly retrieve access token when using a service account
• refresh access token, if needed
• add 'id' field to file object

Added team drive support; minor fixes; deps updates

Changelog:

• added support for team drives
• fixed duplicate folder creation bug
• fixed unable to list contents of a directory with dots in the name
• minor updates