Added pnp package preinstallation step to cache large and rarely changing dependencies (like PlayWright)

This variable is also required because:
https://gitlab.syncad.com/hive/schemas/-/jobs/708586

Extend build and deploy python wheel jobs templates so they include build version in artifacts dotenv

Emscripten image tag (used at `.wasm_build_job_template` updated to latest one. Also `.wasm_build_job_template` job artifacts contain *.js files.

Prerequisites for reusing `.pattern_tests_template` in Hived CI: defined `.pytest_based_template` job definition

Docker and script definitions for emscripten toolset (including precompiled boost openssl and sec256k1 libraries)