Update the program participation fields in the Staging tables and supporting code

[lizbrunet]

CIID 7941

CEDS uses "exit date" to indicate when a person leaves a program, rather than "end date." To align with CEDS naming conventions, the Column Names need to be updated.

Update the program participation fields in the Staging tables and supporting code:

Change [ProgramParticipationEndDate] to [ProgramParticipationExitDate] across ProgramParticipationCTE, NorD, SpecialEducation, TitleI, and TitleIII.

Change [FosterCare_ProgramParticipationEndDate] to [FosterCare_ProgramParticipationExitDate] in PersonStatus.

Change [Immigrant_ProgramParticipationEndDate] to [Immigrant_ProgramParticipationExitDate] in PersonStatus.

Change [Section504_ProgramParticipationEndDate] to [Section504_ProgramParticipationExitDate] in PersonStatus.