feat(instance): add support for all server actions and snapshot operations

[Mia-Cross]

Closes #3333

To-do:

• add test for server action backup
• add test for custom zone in create snapshot
• add test for custom zone in export snapshot
• test hardcoded ID with server action
• test hardcoded ID with create snapshot
• test hardcoded ID with export snapshot

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 355 lines in your changes missing coverage. Please review.
✅ Project coverage is 1.69%. Comparing base (e00b6fe) to head (356aa1e).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ternal/services/instance/action_create_snapshot.go	0.00%	143 Missing ⚠️
...ternal/services/instance/action_export_snapshot.go	0.00%	127 Missing ⚠️
internal/services/instance/testfuncs/checks.go	0.00%	44 Missing ⚠️
internal/services/instance/action_server_action.go	0.00%	35 Missing ⚠️
provider/framework.go	0.00%	4 Missing ⚠️
internal/services/instance/helpers_instance.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##           master   #3520      +/-   ##
=========================================
- Coverage    1.71%   1.69%   -0.02%     
=========================================
  Files         420     422       +2     
  Lines       45909   46247     +338     
=========================================
- Hits          787     785       -2     
- Misses      45035   45374     +339     
- Partials       87      88       +1     

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