Add checks of Java and GraalVM versions before the `sbt` project is fully loaded. This ensures that all the devs have exactly the version specified in our `build.sbt`.
# Important Notes
Trying to start `sbt` with a different java versions now results in:
```
$ java -version
openjdk version "21" 2023-09-19
OpenJDK Runtime Environment GraalVM CE 21+35.1 (build 21+35-jvmci-23.1-b15)
OpenJDK 64-Bit Server VM GraalVM CE 21+35.1 (build 21+35-jvmci-23.1-b15, mixed mode, sharing)
$ sbt
[info] welcome to sbt 1.9.7 (GraalVM Community Java 21)
[info] loading settings for project enso-build from plugins.sbt ...
[info] loading project definition from /home/pavel/dev/enso/project
[info] loading settings for project enso from build.sbt ...
[info] resolving key references (65272 settings) ...
[info] set current project to enso (in build file:/home/pavel/dev/enso/)
[error] Running on GraalVM version 21. Expected GraalVM version 21.0.2.
[error] Total time: 0 s, completed Feb 20, 2024, 1:06:18 PM
[warn] Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? (default: r)
```
```
$ java -version
openjdk version "17.0.10" 2024-01-16
OpenJDK Runtime Environment JBR-17.0.10+1-1087.17-jcef (build 17.0.10+1-b1087.17)
OpenJDK 64-Bit Server VM JBR-17.0.10+1-1087.17-jcef (build 17.0.10+1-b1087.17, mixed mode)
$ sbt
[info] welcome to sbt 1.9.7 (JetBrains s.r.o. Java 17.0.10)
[info] loading settings for project enso-build from plugins.sbt ...
[info] loading project definition from /home/pavel/dev/enso/project
[info] compiling 44 Scala sources to /home/pavel/dev/enso/project/target/scala-2.12/sbt-1.0/classes ...
[info] loading settings for project enso from build.sbt ...
[info] resolving key references (65272 settings) ...
[info] set current project to enso (in build file:/home/pavel/dev/enso/)
[warn] Running on non-GraalVM JVM (The actual java.vendor is JetBrains s.r.o.). Expected GraalVM Community java.vendor.
[error] Running on Java version 17. Expected Java version 21.
[error] Total time: 0 s, completed Feb 20, 2024, 1:07:40 PM
[warn] Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore? (default: r)
```
Adds these JAR modules to the `component` directory inside Engine distribution:
- `graal-language-23.1.0`
- `org.bouncycastle.*` - these need to be added for graalpy language
# Important Notes
- Remove `org.bouncycastle.*` packages from `runtime.jar` fat jar.
- Make sure that the `./run` script preinstalls GraalPy standalone distribution before starting engine tests
- Note that using `python -m venv` is only possible from standalone distribution, we cannot distribute `graalpython-launcher`.
- Make sure that installation of `numpy` and its polyglot execution example works.
- Convert `Text` to `TruffleString` before passing to GraalPy - 8ee9a2816f
Upgrade to GraalVM JDK 21.
```
> java -version
openjdk version "21" 2023-09-19
OpenJDK Runtime Environment GraalVM CE 21+35.1 (build 21+35-jvmci-23.1-b15)
OpenJDK 64-Bit Server VM GraalVM CE 21+35.1 (build 21+35-jvmci-23.1-b15, mixed mode, sharing)
```
With SDKMan, download with `sdk install java 21-graalce`.
# Important Notes
- After this PR, one can theoretically run enso with any JRE with version at least 21.
- Removed `sbt bootstrap` hack and all the other build time related hacks related to the handling of GraalVM distribution.
- `project-manager` remains backward compatible - it can open older engines with runtimes. New engines now do no longer require a separate runtime to be downloaded.
- sbt does not support compilation of `module-info.java` files in mixed projects - https://github.com/sbt/sbt/issues/3368
- Which means that we can have `module-info.java` files only for Java-only projects.
- Anyway, we need just a single `module-info.class` in the resulting `runtime.jar` fat jar.
- `runtime.jar` is assembled in `runtime-with-instruments` with a custom merge strategy (`sbt-assembly` plugin). Caching is disabled for custom merge strategies, which means that re-assembly of `runtime.jar` will be more frequent.
- Engine distribution contains multiple JAR archives (modules) in `component` directory, along with `runner/runner.jar` that is hidden inside a nested directory.
- The new entry point to the engine runner is [EngineRunnerBootLoader](https://github.com/enso-org/enso/pull/7991/files#diff-9ab172d0566c18456472aeb95c4345f47e2db3965e77e29c11694d3a9333a2aa) that contains a custom ClassLoader - to make sure that everything that does not have to be loaded from a module is loaded from `runner.jar`, which is not a module.
- The new command line for launching the engine runner is in [distribution/bin/enso](https://github.com/enso-org/enso/pull/7991/files#diff-0b66983403b2c329febc7381cd23d45871d4d555ce98dd040d4d1e879c8f3725)
- [Newest version of Frgaal](https://repo1.maven.org/maven2/org/frgaal/compiler/20.0.1/) (20.0.1) does not recognize `--source 21` option, only `--source 20`.
