Adds Grant Role support from non-main db

[gurkanindibay]

DESCRIPTION: Adds support for distributed role-membership management commands from the databases where Citus is not installed (GRANT <role> TO <role>)

This PR also refactors the code-path that allows executing some of the node-wide commands so that we use send deparsed query string to other nodes instead of the queryString passed into utility hook.
Hence fixes #7448.

[codecov]

Codecov Report

Merging #7404 (4ef4bad) into main (9a0cdbf) will decrease coverage by 0.58%.
The diff coverage is 95.23%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7404      +/-   ##
==========================================
- Coverage   89.60%   89.03%   -0.58%     
==========================================
  Files         282      282              
  Lines       60323    60347      +24     
  Branches     7512     7517       +5     
==========================================
- Hits        54051    53727     -324     
- Misses       4117     4416     +299     
- Partials     2155     2204      +49     

[onurctirtir]

We're close to merging this.

[onurctirtir]

In summary, let's merge those two one-liner fixes in separate two PRs and then we're good to merge this:
#7404 (comment)
#7404 (comment)

[onurctirtir]

Let's merge #7517 and then rebase this onto main. Then we can finally merge this one.

[gurkanindibay]

Let's merge #7517 and then rebase this onto main. Then we can finally merge this one.

Merged #7517 Kindly request your review