[chore] Rename MeshSync Tables.

[theBeginner86]

Description

Objects -> KubernetesResources
ResourceSpec -> KubernetesResourceSpec
ResourceObjectMeta -> KubernetesResourceObjectMeta
ResourceStatus -> KubernetesResourceStatus
KeyValue -> KubernetesKeyValue

According to slides in Meshery Architecture Deck

This PR fixes #

Notes for Reviewers

Signed commits

• Yes, I signed my commits.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (b410227) 2.77% compared to head (725ce74) 2.77%.

Additional details and impacted files

@@          Coverage Diff           @@
##           master    #261   +/-   ##
======================================
  Coverage    2.77%   2.77%           
======================================
  Files           6       6           
  Lines         397     397           
======================================
  Hits           11      11           
  Misses        385     385           
  Partials        1       1           

Flag	Coverage Δ
unittests	2.77% <60.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
meshsync/handlers.go	10.18% <60.00%> (ø)

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