Add Open Telemetry

[ross-p-smith]

Purpose

Python is not configured to use the Open Telemetry library so I believe that this is the reason we are not seeing anything in Application Insights.

Fixes #547

After deploying I chatted with the Web App and this appears in AppInsights

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

Do we start to see things in Application Insights!

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
code
app.py	125	42	66%	30, 111, 150–151, 155, 158–159, 173–175, 177, 185, 189–193, 195, 202, 206–207, 213, 219–220, 222–223, 226, 240–241, 258, 260–261, 265, 274–278, 295, 297, 345–346
code/backend/batch
function_app.py	12	12	0%	1–6, 8, 10, 13–16
TOTAL	1637	980	40%

Tests	Skipped	Failures	Errors	Time
40	0 💤	0 ❌	0 🔥	10.422s ⏱️

[superhindupur]

Surprising how the coverage percentage dropped by 15%

[ross-p-smith]

Surprising how the coverage percentage dropped by 15%

Because the tests failed :-)