feat: custom filtering of iam by path or by tag

[bjfish25]

Major:

• Allow filtering by Path or by Tag.

Minor:

• Ignore errors in kms
• golangci fixes

Example

settings:
  IAMRole:
    CustomFilters:
      - type: "Path"
        value: "/some/path"
      - type: "Tag"
        value: "SOME_TAG"
  IAMRolePolicy:
    CustomFilters:
      - type: "Path"
        value: "/some/path"
  IAMRolePolicyAttachments:
    CustomFilters:
      - type: "Path"
        value: "/some/path"
  IAMPolicy:
    CustomFilters:
      - type: "Path"
        value: "/some/path"