Client SDKs: Support self-signed certs

[markphelps]

Discussed in https://github.com/orgs/flipt-io/discussions/4366

^{Originally posted by cristianonicolai June 20, 2025}
I'm following the configuration to setup HTTPS port on the Docker server with server.cert_file and server.cert_key, but I was wondering if the Java and React clients require any special configuration to connect via HTTPS? Thanks

TODO

FFI

• Add support in FFI engine (feat: add TLS configuration support to FFI engine #1133) released ✅
• Add to Python SDK (Feat: python tls support #1134) released ✅
• Add to Java SDK (feat: add TLS configuration support to Java SDK #1135) released ✅
• Add to Ruby SDK (feat: add TLS configuration support to Ruby SDK #1136) released ✅
• Add to CSharp SDK (feat: add TLS configuration support to C# and Dart SDKs #1137) released ✅
• Add to Dart SDK (feat: add TLS configuration support to C# and Dart SDKs #1137) not released ❌ (see Figure out how to trim Dart SDK size #1139)
• Add to Swift SDK
• Add to Kotlin/Android SDK

WASM JS

• Implement in JS SDKs

Pure WASM

• Implement in Go SDK (feat: add TLS configuration support to Go SDK #1138) released ✅

[markphelps]

superseded by #1170