feat: rework cache package - add gcs cache - add cache purge command

[matthisholleville]

📑 Description

• Cache package rework
• Added GCS as a cache provider
• Added the cache object purge command
• Improved the output of the k8sgpt cache list command

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

ℹ Additional Information

The cache package rework enables the integration of other providers without conflicts in option naming. For example, the integration of GCS and S3 uses the same options (bucketName & Region), which made GCS integration impossible before the rework.

The server mode has been tested with the k8sgpt-ai/schemas#19 branch available on buf.build.

The k8sgpt cache list command now returns a table, which makes it easier for users to read.

(matthisholleville) ➜  k8sgpt git:(feat/rework-cache) ✗ ./bin/k8sgpt cache list                                                                  
+------------------------------------------------------------------+-------------------------------+
|                               NAME                               |           UPDATEDAT           |
+------------------------------------------------------------------+-------------------------------+
| 02111dd651b326313a1d79097ae213d71287beed3a8217f0026e0efab7363d7d | 2023-11-13 12:56:50 +0000 UTC |
+------------------------------------------------------------------+-------------------------------+

The k8sgpt cache purge command allows you to delete an object from the cache (local or remote). A future improvement could allow for the deletion of multiple or all cache objects.

[arbreezy]

Awesome work