Rust

Initial session store implementation for extensions #103

Job	Run time
Lint	29s
Build Libraries on AMD64 Rust stable	15m 14s
Test on windows-latest Rust stable	6m 22s
Test on macos-latest Rust stable	3m 3s
Check Cargo.toml formatting (amd64, stable)	1m 29s
Test Ballista on AMD64 Rust stable	5m 5s
Docker	15s
verify benchmark results (amd64) (amd64, stable)	11m 29s
Test Workspace on AMD64 Rust stable	8m 58s
Clippy (amd64, stable)	2m 54s
	55m 18s

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