fix(scenario-database): Fixed database type affinities

[schwepmo]

Description

• While handling different SUMO edge names it became apparent that sometimes names would be treated as REALs, this was due to the usage of the non-existent affinity STRING
• This PR changes all affiliations to valid or default affinity values
  • STRING -> TEXT
  • DOUBLE -> REAL
• this has the unfortunate side-effect that the scenario databases will be a little bit larger in size, but I believe we don't need to re-create old databases anyhow so this will only affect future scenarios

Issue(s) related to this PR

• resolves internal issue 654

Affected parts of the online documentation

• No changes required

Definition of Done

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Requested (can be enforced by maintainers)

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Special notes to reviewer