feat(#2655): added lambda near package

[maxonfjvipon]

Closes: #2655

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PR-Codex overview

This PR focuses on adding lambda functions and package objects to the specified files.

Detailed summary

• Added lambda function and package object to eo-maven-plugin/src/test/resources/org/eolang/maven/phi/package.yaml
• Added lambda function and package object to eo-maven-plugin/src/test/resources/org/eolang/maven/phi/custom-alias.yaml
• Added package object to eo-maven-plugin/src/main/resources/org/eolang/maven/phi/to-phi.xsl
• Added lambda function and package object to eo-maven-plugin/src/test/resources/org/eolang/maven/phi/fibonaci.yaml

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[maxonfjvipon]

@yegor256 please have a look

[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 23min)