[MoM] Add Astral Projection Clairsentient power

[Standing-Storm]

Summary

Mods "[MoM] Add Astral Projection Clairsentient power"

Purpose of change

Been meaning to do this for a while and it's the original reason I added the ETHEREAL flag

Describe the solution

Add the Astral Projection power, which allows the psion to send their spirit forth from their body and wander the world. While projecting, you are invisible, incorporeal, and cannot use other psionics but you are extremely fast (you can still open doors--for some reason you can open doors while incorporeal) and can fly and pass through walls. Every step takes extra stamina, and while projecting your stamina does not regenerate. When out of stamina, you are forcibly returned to your body.

When projecting, you gain a spell (an actual spell to circumvent the NO_PSIONICS flag) that returns you to your body, and another one that lets you pass through walls. Both of these are NO_FAIL and take no time to use.

Describe alternatives you've considered

Testing

Contemplation recipe teaches the power. Channeling it leaves a body behind on your square and casts you forth as a spirit, capable of passing through walls, flying, and traveling incredibly fast, but unable to affect the world. You properly gain the "pass through walls" and "return to body" powers when astrally projecting and lose them when you return to your body. Walking costs stamina, you do not regain stamina, and running out of stamina returns you to your body. Waiting while projecting also costs stamina so you can't "rest" in astral form to continue it indefinitely. The extra powers work properly. Returning to your body cleans up the body item left behind when you use the power.

Documentation exists

Additional context

Very fresh:

[github-actions]

Spell checker encountered unrecognized words in the in-game text added in this pull request. See below for details.

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• your bodys

This alert is automatically generated. You can simply disregard if this is inaccurate, or (optionally) you can also add the new words to tools/spell_checker/dictionary.txt so they will not trigger an alert next time.

Hints for adding a new word to the dictionary

• If the word is normally in all lowercase, such as the noun word or the verb does, add it in its lower-case form; if the word is a proper noun, such as the surname George, add it in its initial-caps form; if the word is an acronym or has special letter case, such as the acronym CDDA or the unit mW, add it by preserving the case of all the letters. A word in the dictionary will also match its initial-caps form (if the word is in all lowercase) and all-uppercase form, so a word should be added to the dictionary in its normal letter case even if used in a different letter case in a sentence.
• For a word to be added to the dictionary, it should either be a real, properly-spelled modern American English word, a foreign loan word (including romanized foreign names), or a foreign or made-up word that is used consistently and commonly enough in the game. Intentional misspelling (including eye dialect) of a word should not be added unless it has become a common terminology in the game, because while someone may have a legitimate use for it, another person may spell it that way accidentally.

[Hyperseeker]

Can the astral projection drag the "corpse" while incorporeal, given that it's capable of opening doors?

[Standing-Storm]

No, you get a message that says "You lack the substance to affect anything"

Edit: I should probably report the door-opening as a bug, actually.

[MoonlightKitty26]

This is actually really effing cool!