Implement Louisiana State Supplementary Payment (SSP)

[hua7450]

Implement Louisiana's State Supplementary Payment (SSP), which supplements federal SSI for blind individuals only.

Program Overview

• State: Louisiana
• Population covered: Blind SSI recipients only
• Administration: To be confirmed during implementation (state-administered vs federally-administered)

Tasks

• Research Louisiana SSP regulatory authority and benefit amounts
• Add parameters under parameters/gov/states/la/
• Add variables under variables/gov/states/la/
• Add YAML tests under tests/policy/baseline/gov/states/la/
• Register program in spm_unit_benefits.py, household_state_benefits.yaml, and programs.yaml
• Add changelog fragment