Add endpoint for creating local contacts with access control

Introduced a new `local_contact_router` to handle creation of local contacts. The endpoint enforces role-based access control and ensures no duplication of email addresses. Updated the router exports for consistency and cleaned up a large test file to improve readability.

backend/app/models.py

@@ -45,6 +45,17 @@ class Contact(Base):
     shipments = relationship("Shipment", back_populates="contact")
 
 
+class LocalContact(Base):
+    __tablename__ = "local_contacts"
+
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    status = Column(String(255), default="active")
+    firstname = Column(String(255), nullable=False)
+    lastname = Column(String(255), nullable=False)
+    phone_number = Column(String(255), nullable=False)
+    email = Column(String(255), nullable=False)
+
+
 class Address(Base):
     __tablename__ = "addresses"
 
@@ -103,6 +114,10 @@ class Dewar(Base):
     slot = relationship("Slot", back_populates="dewar")
     events = relationship("LogisticsEvent", back_populates="dewar")
     beamline_location = None
+    local_contact_id = Column(Integer, ForeignKey("local_contacts.id"), nullable=True)
+    local_contact = relationship("LocalContact")
+    beamtime = relationship("Beamtime", back_populates="dewars")
+    beamtime_id = Column(Integer, ForeignKey("beamtimes.id"), nullable=True)
 
     @property
     def number_of_pucks(self) -> int:
@@ -216,6 +231,24 @@ class PuckEvent(Base):
     puck = relationship("Puck", back_populates="events")
 
 
+class Beamtime(Base):
+    __tablename__ = "beamtimes"
+
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    pgroups = Column(String(255), nullable=False)
+    beamtime_name = Column(String(255), index=True)
+    beamline = Column(String(255), nullable=True)
+    start_date = Column(Date, nullable=True)
+    end_date = Column(Date, nullable=True)
+    status = Column(String(255), nullable=True)
+    comments = Column(String(200), nullable=True)
+    proposal_id = Column(Integer, ForeignKey("proposals.id"), nullable=True)
+    local_contact_id = Column(Integer, ForeignKey("local_contacts.id"), nullable=False)
+
+    local_contact = relationship("LocalContact")
+    dewars = relationship("Dewar", back_populates="beamtime")
+
+
 # class Results(Base):
 #    __tablename__ = "results"
 #