👷 chore(dev): Support middleware for Prometheus metrics

[yezz123]

FastAPI middleware for collecting and exposing Prometheus metrics.

Usage

from fastapi import FastAPI
from authx.middleware import MetricsMiddleware, get_metrics

app = FastAPI()
app.add_middleware(MetricsMiddleware)
app.add_route("/metrics", get_metrics)

[sourcery-ai]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 4.80%.

Quality metrics	Before	After	Change
Complexity	0.00 ⭐	0.00 ⭐	0.00
Method Length	24.00 ⭐	37.00 ⭐	13.00 👎
Working memory	3.00 ⭐	4.00 ⭐	1.00 👎
Quality	97.67% ⭐	92.87% ⭐	-4.80% 👎

Other metrics	Before	After	Change
Lines	4	5	1

Changed files	Quality Before	Quality After	Quality Change
authx/middleware/init.py	97.67% ⭐	92.87% ⭐	-4.80% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

Legend and Explanation

The emojis denote the absolute quality of the code:

• ⭐ excellent
• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

---

Please see our documentation here for details on how these metrics are calculated.

We are actively working on this report - lots more documentation and extra metrics to come!

Help us improve this quality report!

[codecov]

Codecov Report

Base: 91.47% // Head: 91.79% // Increases project coverage by +0.31% 🎉

Coverage data is based on head (01e0096) compared to base (bfcbd9a).
Patch coverage: 98.85% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #262      +/-   ##
==========================================
+ Coverage   91.47%   91.79%   +0.31%     
==========================================
  Files          56       58       +2     
  Lines        1936     2022      +86     
==========================================
+ Hits         1771     1856      +85     
- Misses        165      166       +1     

Impacted Files	Coverage Δ
tests/middleware/test_metrics.py	97.05% <97.05%> (ø)
authx/middleware/__init__.py	100.00% <100.00%> (ø)
authx/middleware/metrics.py	100.00% <100.00%> (ø)

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