Add plugins page

[soupette]

Signed-off-by: soupette cyril@strapi.io

What does it do?

Describe the technical changes you did.

Why is it needed?

Describe the issue you are solving.

How to test it?

Provide information about the environment and the path to verify the behaviour.

Related issue(s)/PR(s)

Let us know if this is related to any issue/pull request

[HichamELBSI]

LGTM

[ronronscelestes]

LGTM

[codecov]

Codecov Report

Merging #11607 (89ac5fe) into v4/plugins-page (add53a3) will decrease coverage by 11.89%.
The diff coverage is n/a.

❗ Current head 89ac5fe differs from pull request most recent head ed20b01. Consider uploading reports for the commit ed20b01 to get more accurate results

@@                 Coverage Diff                  @@
##           v4/plugins-page   #11607       +/-   ##
====================================================
- Coverage            59.01%   47.12%   -11.90%     
====================================================
  Files                  174      212       +38     
  Lines                 6032     8117     +2085     
  Branches              1267     1775      +508     
====================================================
+ Hits                  3560     3825      +265     
- Misses                2047     3525     +1478     
- Partials               425      767      +342     

Flag	Coverage Δ
front	?
unit	47.12% <ø> (-11.90%)	⬇️

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

Impacted Files	Coverage Δ
packages/core/admin/server/controllers/admin.js	34.54% <ø> (+2.40%)	⬆️
...ackages/core/admin/server/controllers/api-token.js	100.00% <ø> (+3.57%)	⬆️
...ckages/core/admin/server/controllers/permission.js	61.11% <ø> (-3.89%)	⬇️
packages/core/admin/server/controllers/role.js	49.15% <ø> (-0.06%)	⬇️
packages/core/admin/server/controllers/user.js	70.00% <ø> (+2.72%)	⬆️
packages/core/admin/server/services/action.js	92.85% <ø> (+0.54%)	⬆️
packages/core/admin/server/services/auth.js	93.93% <ø> (+0.18%)	⬆️
...r/services/permission/permissions-manager/index.js	100.00% <ø> (+2.63%)	⬆️
...ervices/permission/permissions-manager/sanitize.js	86.66% <ø> (ø)
packages/core/admin/server/services/role.js	96.66% <ø> (+0.64%)	⬆️
... and 110 more

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