move regulating from regulating equipment to regulatingPoint

[EtienneLt]

Please check if the PR fulfills these requirements

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Other information:
linked with powsybl/powsybl-network-store#483

[antoinebhs]

When I import a network, I have this error:
grid-network-store-server-1 | org.postgresql.util.PSQLException: ERROR: column "regulating" is of type boolean but expression is of type character varying

[EtienneLt]

When I import a network, I have this error: grid-network-store-server-1 | org.postgresql.util.PSQLException: ERROR: column "regulating" is of type boolean but expression is of type character varying

Yes I found the mistake

[antoinebhs]

Code OK
Test OK