Add proxy support

[denrase]

📜 Description

• Adds Proxy to options
• Use HttpClient on non-native io platforms with proxy setup
• Pass proxy settings to android

💡 Motivation and Context

Closes #392

💚 How did you test it?

Unit tests

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
• I updated the docs if needed
• All tests passing
• No breaking changes

[github-actions]

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against bd279c7

[codecov]

Codecov Report

Attention: Patch coverage is 84.21053% with 9 lines in your changes missing coverage. Please review.

Project coverage is 88.23%. Comparing base (6e9c5a2) to head (bd279c7).

Files	Patch %	Lines
dart/lib/src/http_client/client_provider.dart	0.00%	4 Missing ⚠️
dart/lib/src/http_client/io_client_provider.dart	84.61%	4 Missing ⚠️
...rt/lib/src/transport/spotlight_http_transport.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2192      +/-   ##
==========================================
- Coverage   88.24%   88.23%   -0.02%     
==========================================
  Files         231      234       +3     
  Lines        8072     8131      +59     
==========================================
+ Hits         7123     7174      +51     
- Misses        949      957       +8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1233.73 ms	1261.27 ms	27.54 ms
Size	8.34 MiB	9.66 MiB	1.32 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
a7acb24	1296.71 ms	1317.69 ms	20.98 ms
9f9f94f	1268.33 ms	1284.73 ms	16.41 ms
754cdbe	1261.67 ms	1280.88 ms	19.20 ms
d8f5abb	1237.73 ms	1259.13 ms	21.39 ms
b0811cc	1238.23 ms	1255.82 ms	17.59 ms
6034b0a	1244.89 ms	1270.22 ms	25.33 ms
1596141	1230.77 ms	1241.90 ms	11.13 ms
ddc97ad	1228.02 ms	1232.61 ms	4.59 ms
8fa3934	1252.79 ms	1272.41 ms	19.62 ms
a5031f1	1244.14 ms	1268.79 ms	24.64 ms

App size

Revision	Plain	With Sentry	Diff
a7acb24	8.16 MiB	9.17 MiB	1.01 MiB
9f9f94f	8.15 MiB	9.15 MiB	1020.76 KiB
754cdbe	8.29 MiB	9.37 MiB	1.08 MiB
d8f5abb	8.33 MiB	9.40 MiB	1.07 MiB
b0811cc	8.32 MiB	9.38 MiB	1.06 MiB
6034b0a	8.33 MiB	9.40 MiB	1.07 MiB
1596141	8.29 MiB	9.37 MiB	1.08 MiB
ddc97ad	8.29 MiB	9.37 MiB	1.08 MiB
8fa3934	8.09 MiB	9.07 MiB	1000.86 KiB
a5031f1	8.32 MiB	9.50 MiB	1.18 MiB

Previous results on branch: feat/proxy-setup

Startup times

Revision	Plain	With Sentry	Diff
b71613a	1247.63 ms	1269.15 ms	21.52 ms
2e9926e	1249.51 ms	1267.76 ms	18.24 ms
c240fc7	1244.27 ms	1274.88 ms	30.60 ms
921b4d6	1223.27 ms	1261.88 ms	38.61 ms
89c0915	1259.49 ms	1287.50 ms	28.01 ms
f48b52d	1256.86 ms	1266.51 ms	9.65 ms
ef70ca4	1232.40 ms	1253.39 ms	20.99 ms
67c474f	1230.53 ms	1253.52 ms	22.99 ms

App size

Revision	Plain	With Sentry	Diff
b71613a	8.34 MiB	9.65 MiB	1.31 MiB
2e9926e	8.33 MiB	9.64 MiB	1.31 MiB
c240fc7	8.34 MiB	9.65 MiB	1.31 MiB
921b4d6	8.34 MiB	9.65 MiB	1.31 MiB
89c0915	8.34 MiB	9.65 MiB	1.31 MiB
f48b52d	8.34 MiB	9.65 MiB	1.31 MiB
ef70ca4	8.34 MiB	9.65 MiB	1.31 MiB
67c474f	8.34 MiB	9.65 MiB	1.31 MiB

[github-actions]

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	385.35 ms	465.92 ms	80.57 ms
Size	6.35 MiB	7.42 MiB	1.07 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
eecbbca	324.37 ms	352.49 ms	28.12 ms
7748b7c	356.37 ms	426.70 ms	70.33 ms
f4cc744	349.53 ms	394.68 ms	45.15 ms
7ec9238	414.02 ms	513.94 ms	99.91 ms
f1314d5	313.89 ms	372.10 ms	58.21 ms
48adddf	353.96 ms	431.10 ms	77.14 ms
521cfbf	332.78 ms	376.04 ms	43.26 ms
955541a	360.53 ms	452.10 ms	91.57 ms
1ac008b	370.04 ms	435.58 ms	65.54 ms
746a779	347.94 ms	385.71 ms	37.78 ms

App size

Revision	Plain	With Sentry	Diff
eecbbca	5.94 MiB	6.89 MiB	975.78 KiB
7748b7c	6.27 MiB	7.20 MiB	959.09 KiB
f4cc744	5.94 MiB	6.95 MiB	1.01 MiB
7ec9238	6.35 MiB	7.42 MiB	1.06 MiB
f1314d5	6.06 MiB	7.10 MiB	1.04 MiB
48adddf	6.27 MiB	7.20 MiB	959.09 KiB
521cfbf	5.94 MiB	6.97 MiB	1.03 MiB
955541a	6.27 MiB	7.20 MiB	957.75 KiB
1ac008b	6.33 MiB	7.27 MiB	954.13 KiB
746a779	6.27 MiB	7.20 MiB	956.05 KiB

Previous results on branch: feat/proxy-setup

Startup times

Revision	Plain	With Sentry	Diff
ef70ca4	422.87 ms	555.08 ms	132.21 ms
c240fc7	457.14 ms	552.26 ms	95.12 ms
f48b52d	374.96 ms	460.33 ms	85.37 ms
b71613a	346.51 ms	392.96 ms	46.45 ms
2e9926e	488.16 ms	620.87 ms	132.72 ms
67c474f	438.41 ms	524.86 ms	86.45 ms
89c0915	469.11 ms	575.74 ms	106.63 ms
921b4d6	402.88 ms	453.39 ms	50.51 ms

App size

Revision	Plain	With Sentry	Diff
ef70ca4	6.35 MiB	7.41 MiB	1.05 MiB
c240fc7	6.35 MiB	7.42 MiB	1.06 MiB
f48b52d	6.35 MiB	7.41 MiB	1.05 MiB
b71613a	6.35 MiB	7.41 MiB	1.05 MiB
2e9926e	6.35 MiB	7.41 MiB	1.05 MiB
67c474f	6.35 MiB	7.41 MiB	1.05 MiB
89c0915	6.35 MiB	7.41 MiB	1.05 MiB
921b4d6	6.35 MiB	7.42 MiB	1.06 MiB

[denrase]

Can't figure out how to format correctly so that klint is happy ^^

[buenaflor]

nice 👍

[buenaflor]

Before merging, let's investigate security implications of this

[denrase]

@denrase Users should be aware of the implications that using a proxy brings. https://www.upguard.com/blog/proxy-server

[buenaflor]

@denrase makes sense

looks good then