Customize whether the unit can be detected by psychic detector

[DeathFishAtEase]

What kind of change is this?

• New feature, vanilla bugfix or enhancement of a released feature - changelog, docs and credits entries are needed.
• Improvement to a new (unreleased) feature - docs and credits entries are needed; no changelog entry (Skip Changelog).
• Bugfix to a new (unreleased) feature - credits entry is needed; no changelog or docs entries (Skip Changelog, Skip Docs).
• Bugfix to an old (released) feature - changelog and credits entries are needed; no docs entry (Skip Docs).
• Completely minor change (e.g. a typo fix) - no entries are needed (Skip Changelog, Skip Docs, Skip Credits).

Description

• Now you can use the following flag to define whether the unit can be detected by buildings that have PsychicDetectionRadius.

In rulesmd.ini:

[SOMETECHNO]            ; TechnoType
PsychicDetectable=true  ; boolean

[phoboscn-bot]

To Chinese users:
This pull request has been mentioned on Phobos CN. There might be relevant details there:

致中文用户：
此拉取请求已在 Phobos CN 上被提及。那里可能有相关详细信息：

https://www.phoboscn.top/t/topic/737/1

[github-actions]

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[NetsuNegi]

LGTM