Sustainability sub categories for launch #360

- Tested on local db

migrations/011.sustainability.down.sql

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+-- Remove sustainability fields, update in paralell with adding new fields
+-- BREEAM rating
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_breeam_rating;
+-- BREEAM date
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_breeam_date;
+
+-- DEC (display energy certifcate, only applies to non domestic buildings)
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_dec;
+-- DEC date
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_dec_date;
+
+--TODO: DEC certifcate number, is there an online store for these?
+
+-- Aggregate EPC rating (Estimated) for a building, derived from inidividual certificates
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_aggregate_estimate_epc;
+
+-- Last significant retrofit date YYYY
+ALTER TABLE buildings DROP COLUMN IF EXISTS sust_retrofit_date;
+
+--TODO : Embodied carbon
+
+--TODO : Life expectancy minimum
+
+--TODO : Average lifespan for typology
+
+--TODO : Adaptability rating

migrations/012.sustainability.up.sql

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+-- BREEAM ratings, one of:
+-- - Outstanding
+-- - Excellent
+-- - Very good
+-- - Good
+-- - Pass
+-- - Unclassified
+CREATE TYPE sust_breeam_rating
+AS ENUM ('Outstanding',
+    'Excellent',
+    'Very good',
+    'Good',
+    'Pass',
+    'Unclassified');
+
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_breeam_rating sust_breeam_rating DEFAULT 'Unclassified';
+
+-- Date of BREEAM
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_breeam_date smallint;
+
+-- DEC (display energy certifcate, only applies to non domestic buildings)
+-- A - G
+CREATE TYPE sust_dec
+AS ENUM ('A',
+    'B',
+    'C',
+    'D',
+    'E',
+    'F',
+    'G');
+
+-- Date of DEC YYYY
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_dec_date smallint;
+
+
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_dec sust_dec;
+
+-- Aggregate EPC rating (Estimated) for a building, derived from inidividual certificates
+-- A+ - G
+CREATE TYPE sust_aggregate_estimate_epc
+AS ENUM ('A',
+    'B',
+    'C',
+    'D',
+    'E',
+    'F',
+    'G');
+
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_aggregate_estimate_epc sust_aggregate_estimate_epc;
+
+-- Last significant retrofit date YYYY
+ALTER TABLE buildings
+    ADD COLUMN IF NOT EXISTS sust_retrofit_date smallint;