feat: Add request validation

[gtema]

Maybe not complete in the coverage, but adds request schema validation
based on the validator crate. utoipa and schemars are describing
the schema, but not enforcing, thus need to add something else.

Fixes: #324

[github-actions]

Bencher Report

Branch	validation
Testbed	ubuntu-latest

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Benchmark	Latency	nanoseconds (ns)
fernet token/project	📈 view plot ⚠️ NO THRESHOLD	1,503.30 ns
get_fernet_token_timestamp/project	📈 view plot ⚠️ NO THRESHOLD	162.61 ns

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[github-actions]

🦢 Load Test Results

Goose Attack Report

Plan Overview

Action	Started	Stopped	Elapsed	Users
Increasing	25-12-02 15:00:11	25-12-02 15:00:13	00:00:02	0 → 4
Maintaining	25-12-02 15:00:13	25-12-02 15:00:43	00:00:30	4
Decreasing	25-12-02 15:00:43	25-12-02 15:00:43	00:00:00	0 ← 4

Request Metrics

Method	Name	# Requests	# Fails	Average (ms)	Min (ms)	Max (ms)	RPS	Failures/s
GET		7551	0	15.35	6	62	251.70	0.00
	Aggregated	7551	0	15.35	6	62	251.70	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		14	16	18	20	23	26	33	62
	Aggregated	14	16	18	20	23	26	33	62

Status Code Metrics

Method	Name	Status Codes
GET		7,551 [200]
	Aggregated	7,551 [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	4804	0	12.01	6	52	160.13	0.00
ValidateToken
1.0	0	0	0.00	0	0	0.00	0.00
1.1	2747	0	21.40	13	62	91.57	0.00
Aggregated	7551	0	15.35	6	62	251.70	0.00

Scenario Metrics

Transaction	# Users	# Times Run	Average (ms)	Min (ms)	Max (ms)	Scenarios/s	Iterations
ListUsers	2	4802	12.02	6	52	160.07	2401.00
ValidateToken	2	2745	21.41	13	62	91.50	1372.50
Aggregated	4	7547	15.43	6	62	251.57	3773.50

Error Metrics

Method	Name	#	Error

View full report