Implemented necessary unix system calls

[c71n93]

Related to #3236

Adds infrastructure for system calls implementation. Also presents some basic unix system calls: getpid, read, write.

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PR-Codex overview

This PR updates system calls and dependencies in EO runtime.

Detailed summary

• Updated system calls and dependencies in EO runtime
• Added method to extract data with a specific type
• Updated Maven plugin configuration
• Added licensing information to various files

The following files were skipped due to too many changes: eo-runtime/src/main/java/EOorg/EOeolang/EOsys/DispatchedUnixSyscall.java, eo-runtime/src/test/java/EOorg/EOeolang/EOsys/EOosTest.java, eo-runtime/src/main/java/EOorg/EOeolang/EOsys/CStdLib.java, eo-runtime/src/main/java/EOorg/EOeolang/EOsys/EOposix.java, eo-runtime/src/test/java/org/eolang/SnippetTestCase.java, eo-runtime/src/test/java/EOorg/EOeolang/EOsys/EOposixTest.java, eo-runtime/src/test/java/EOorg/EOeolang/EOsys/DispatchedUnixSyscallTest.java, eo-runtime/src/main/java/EOorg/EOeolang/EOsys/DispatchedNativeDefault.java

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[c71n93]

@maxonfjvipon could you check this one, please?

[maxonfjvipon]

@c71n93 please merge last version of master branch. Some break changes happened

[c71n93]

@maxonfjvipon all resolved, please check

[c71n93]

@yegor256 could you check this one, please?

[c71n93]

@yegor256 could you merge this one please? It is necessary to continue moving windows system calls into this repo (#3236)

[yegor256]

@c71n93 probably a typo in file name, should be posix-test.eo

[c71n93]

@yegor256 thank you. all fixed, check please.

[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 31min)

[0crat]

@maxonfjvipon Great job on the review! 🎉 You've earned 63 points: +25 base, +18 for reviewing 930 hits-of-code, and +20 for your 25 insightful comments. We didn't deduct points for self-review or low comment count, which shows your thoroughness. Your balance is now +175. Keep up the excellent work!

[0crat]

@c71n93 Great contribution! You've earned +4 points: +25 base, -7 for 970 hits-of-code (≥200), -15 for 970 hits-of-code (≥800), -8 for 33 review comments, +10 minimum bonus. Remember, quality over quantity helps maximize rewards. Your balance: +101. Keep up the good work! 💪