feat: Forbid use of unwrap and expect

[gtema]

Add a linter rule forbidding use of unwrap and expect in the code. Of
course this required adding corresponding handling of potential errors.

Fixes: #329

[github-actions]

Bencher Report

Branch	unsafe
Testbed	ubuntu-latest

Click to view all benchmark results

Benchmark	Latency	Benchmark Result microseconds (µs) (Result Δ%)	Upper Boundary microseconds (µs) (Limit %)
fernet token/project	📈 view plot 🚷 view threshold	1.14 µs (+1.20%) Baseline: 1.13 µs	1.23 µs (92.67%)

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[github-actions]

🦢 Load Test Results

Goose Attack Report

Plan Overview

Action	Started	Stopped	Elapsed	Users
Increasing	25-11-07 18:39:56	25-11-07 18:39:58	00:00:02	0 → 4
Maintaining	25-11-07 18:39:58	25-11-07 18:40:28	00:00:30	4
Decreasing	25-11-07 18:40:28	25-11-07 18:40:28	00:00:00	0 ← 4

Request Metrics

Method	Name	# Requests	# Fails	Average (ms)	Min (ms)	Max (ms)	RPS	Failures/s
GET		15864	0	7.06	5	14	528.80	0.00
	Aggregated	15864	0	7.06	5	14	528.80	0.00

Response Time Metrics

Method	Name	50%ile (ms)	60%ile (ms)	70%ile (ms)	80%ile (ms)	90%ile (ms)	95%ile (ms)	99%ile (ms)	100%ile (ms)
GET		7	7	7	7	8	8	9	14
	Aggregated	7	7	7	7	8	8	9	14

Status Code Metrics

Method	Name	Status Codes
GET		15,864 [200]
	Aggregated	15,864 [200]

Transaction Metrics

Transaction	# Times Run	# Fails	Average (ms)	Min (ms)	Max (ms)	RPS	Failures/s
ListUsers
0.0	0	0	0.00	0	0	0.00	0.00
0.1	15864	0	7.08	5	14	528.80	0.00
Aggregated	15864	0	7.06	5	14	528.80	0.00

Scenario Metrics

Transaction	# Users	# Times Run	Average (ms)	Min (ms)	Max (ms)	Scenarios/s	Iterations
ListUsers	4	15860	7.08	5	14	528.67	3965.00
Aggregated	4	15860	7.08	5	14	528.67	3965.00

Error Metrics

Method	Name	#	Error

View full report