docs: Technical concept for migrating to Unified Metering (#159)

* initial architecture diagrams

* update UM architecture diagram

* update EDP and UM architecture diagrams

* update EDP and UM architecture diagrams

* add ADR outline

* update ADR

* update ADR

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Korbinian Stoemmer <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Korbinian Stoemmer <[email protected]>

* update EDP and UM architecture diagrams

* update ADR

* add link for UM payload schema

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

* update ADR

* Update docs/contributor/arch/02-unified-metering-concept.md

Co-authored-by: Małgorzata Świeca <[email protected]>

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Co-authored-by: Korbinian Stoemmer <[email protected]>
Co-authored-by: Małgorzata Świeca <[email protected]>

Author: 3 people