chore: improve blueprint-manager and blueprint-test-utils

[shekohex]

This pull request includes several changes across multiple files to improve the codebase, enhance functionality, and fix issues. The most important changes include modifying process argument generation, refining test utilities, and updating the blueprint manager's test extension.

Argument Generation Improvements:

• blueprint-manager/src/sources/mod.rs: Simplified the test mode argument and added support for a pretty-print option. [1] [2]

Test Utilities Enhancements:

• blueprint-manager/src/sources/testing.rs: Refined binary path determination based on build profile and removed redundant build process code. [1] [2]
• blueprint-test-utils/src/lib.rs: Added support for ED25519 key generation and validation, updated function names for clarity, and introduced a helper function to wait for in-block success. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

Blueprint Manager Test Extension Updates:

• blueprint-test-utils/src/test_ext.rs: Updated to request and approve services, and to use the WebSocket RPC endpoint from options. [1] [2] [3] [4] [5]

Macro Context Derive Update:

• macros/context-derive/src/subxt.rs: Changed the RPC URL field to use the WebSocket endpoint.

[Serial-ATA]

Nice!

Unrelated to this, but if you haven't built the blueprint it'll just infinitely error since it keeps looping till everyone's online. The same thing happened with the old cargo install way, just whenever it failed to build.