feat: refactor / additional flag autoGenerateIamPermissions

[markussiebert]

• remove CreationType (Single, Multi)
• replace with ResourceType (PARAMETER_MULTI) and move it to properties fixes: Improve usability for SSM:Parameters - remove public property ResourceType #1076
• add property 'autoGenerateIamPermissions' fixes: make lambda role configurable #1087
• add property 'role' for SopsSyncProvider fixes: make lambda role configurable #1087
• move resourceType from syncOptions to syncProperties, as it shouldn't be set by users
• move permissionhandling to own functions, to reduce cyclomatic compexity

Fixes #1076, #1087

[codecov]

Codecov Report

Attention: Patch coverage is 45.76271% with 32 lines in your changes missing coverage. Please review.

Project coverage is 71.80%. Comparing base (1e69765) to head (7a57321).

Files with missing lines	Patch %	Lines
lambda/main.go	45.76%	29 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1089      +/-   ##
==========================================
- Coverage   72.30%   71.80%   -0.51%     
==========================================
  Files           3        3              
  Lines         455      461       +6     
==========================================
+ Hits          329      331       +2     
- Misses         88       91       +3     
- Partials       38       39       +1     

Flag	Coverage Δ
go-lambda	71.80% <45.76%> (-0.51%)	⬇️

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[lenderom]

I've build this branch local and deployed it without problems in our MultiParameter setup. 👍