feat(ui-img): rework Img

[ToMESSKa]

BREAKING CHANGE: contains breaking changes due to component using the new theming system

INSTUI-4970

ISSUE:

• Img needs to be migrated to the new theming system

TEST PLAN:

• check if the component works the same as before in v1
• check if the components and the examples work in v2 (especially the dark theme)
• check if all necessary the imports are renamed to latest in v2 and v1 files use the right imports
• check if the test files are removed from the v1
• check if the right imports are used in exports/b.ts and exports/a.ts
• check if the package.json uses the correct versioning
• check if the renamed or removed tokes are documented in the upgrade guide (if there's any)
• check if the index.ts files use withStyle instead of withStyleLegacy in v2
• check if the v2 component uses all the tokens
• check if all the old icons were replace with the new ones in the index, test and README files (if there's any)
• check if commit message contains the breaking change comment

[github-actions]

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