Type corrections, minor display updates and removal of redundant median

[amehta-scottlogic]

Changes

This PR has a few unrelated changes. It includes some trivial changes from feedback from mentors, decisions we've made and a bit of future API work

• Fix defined python types for the measurements API (they were just out of date/incorrect)
• Add measurements API function to UI for future use
• Make PM2.5 and PM10 the first columns shown in UI
• Use 1 decimal place precision in summary table
• Add timezone to displayed times
• Remove use of median

[github-actions[bot]]

Coverage report for air-quality-ui

St.:grey_question:	Category	Percentage	Covered / Total
🟢	Statements	98.21%	165/168
🟢	Branches	96.08%	49/51
🟢	Functions	92.86%	39/42
🟢	Lines	98.01%	148/151

Test suite run success

39 tests passing in 11 suites.

Report generated by 🧪jest coverage report action from 149777f6843cb07eae58bcdfd7c5b10223f76e0c

[github-actions[bot]]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
751	704	94%	80%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
air-quality-backend/src/air_quality/api/mappers/measurements_mapper.py	100%	🟢
air-quality-backend/src/air_quality/api/measurements_controller.py	100%	🟢
air-quality-backend/src/air_quality/api/types.py	100%	🟢
air-quality-backend/src/air_quality/database/in_situ.py	100%	🟢
TOTAL	100%	🟢

updated for commit: 149777f by action🐍