v1.0.2703-alpha

VED-807 Refactor backend (#967)

* init: move recordforwarder, copy src/models

* temp: sonar.cpd.exclusions

* nosonar

* temp: sonar.exclusions

* test: remove Dockerfile path

* test: remove Dockerfile path II

* test: remove Dockerfile path III

* fix source_path

* lint

* init: move batch source and tests, duplicate testing_utils

* backend -> lambdas

* cleanup docker tags

* sonar

* lambdas/backend

* sonar

* source_path

* clients/redis_client

* errors

* ruff

* shared/src/common/models

* TEMP: sonar exclusions

* TEMP: sonar exclusions II

* ruff

* cache

* interim - for merge

* interim - for merge II

* path fix

* backend tests

* ruff

* poetry.lock

* smells

* smell: pydantic.ValidationError

* smell: expression_attribute_values

* ApiValidationError

* errors / api_errors

* errors / api_errors II

* backend -> shared

* :${{ env.SHARED_PATH }}/tests

* recordforwarder -> shared

* sonar

* S5332

* smells

* smells II

* smells III

* constants

* ruff

* errors

* rest of errors

* ruff

* singleton s3 client

* shared s3 client II

* mesh_processor env

* assert bug fix attempt

* move_file

* move_file II

* reworked test_clients

* bucket cleanup

* get_nhs_number

* make_*_pk

* make_*_pk II

* cleanup

* remove cpd.exclusions

* utils -> aws_s3_utils

* backend/src/constants

* backend/src/constants II

* utils -> aws_s3_utils II

* remove PII

* revert PK stuff from generic_utils