chore: standardise repository for TFMC

[ryanbarlow97]

Summary

Brings the new Infestations repository in line with the other TFMC plugins.

• Build: Java 21 / paper-api:1.21.10-R0.1-SNAPSHOT with main-SNAPSHOT and the shared POM layout. The Windows systemPath jars, the sibling-checkout InteractibleFurniture jar and the antrun copy step are removed.
• Dependencies: TLibs 2.0.1, SimpleFactions 3.0.2 and InteractibleFurniture 0.2.1, the latest releases, installed by the shared installer. MythicMobs 5.8.0-SNAPSHOT comes from ServerAssets 183a187, checked by checksum. Gson and the BungeeCord chat API come from Paper.
• Code: imports now use the lowercase tlibs, simplefactions and interactiblefurniture packages. The class comment no longer points to the deleted docs/ folder.
• Docs: removes docs/ (implementation batches, review sign-offs, test checklist). The current behaviour guide is now in TF-Minecraft/Docs.
• Repository: adds the shared workflows, artifact check, .gitignore, .editorconfig, licence and README.
• Descriptor: version: '${project.version}' and api-version: '1.21.10'.

Validation

• mvn clean verify passes locally on Java 21.0.12 / Maven 3.9.11 with the pinned inputs; no unit-test suite.
• .github/scripts/plugin-artifact.py accepts the runtime JAR; the embedded plugin.yml has the Maven version and api-version: '1.21.10', and the classes are Java 21 bytecode (major 65).
• The default build prints no compiler warnings. With -Dmaven.compiler.showDeprecation=true, the only warnings left are legacy string UI calls (setDisplayName, ChatColor and similar), which other TFMC plugins also still use.
• GitHub Build workflow passes with the private inputs downloaded by DEPS_TOKEN.
• No live server run. Runtime checks are listed in the Docs guide.

Most of the diff is CRLF-to-LF normalisation. Review with whitespace hidden (?w=1).

Found during review, not changed here

• The whole command requires infestations.admin, so a player with only infestations.admin.reload can't reload.
• A lure can stay active forever if every committed player logs out past the grace period.
• Lure mobs that despawn still count as alive, and queued spawns are lost on restart. Either can leave a lure impossible to finish.
• The logging default is true in code but false in the bundled config.

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