Add n2 gas tanks

[Graugr]

About the PR

added n2 emergency gas tank and variations
added n2 tanks to tank dispencer

Media

[x] The PR is completely finished and I don't need help to finish it.
[x] I carefully reviewed all my changes and did not find any bugs in them.
[x] I ran a local server with my changes and tested everything.
[x] I've added a screenshot/video of the in-game PR demo, or this PR doesn't require it.

Changelog

🆑 Graugr

• add: N2 emergency tank
• add: extended N2 emergency tank
• add: double extended N2 emergency tank
• tweak: Tank dispencer assortment changed
• add: N2 emergency tank
• add: extended N2 emergency tank
• add: double extended N2 emergency tank
• add: O2 emergency tank
• add: extended O2 emergency tank
• add: double extended O2 emergency tank
  

[sTiKyt]

Would be nice to sort them a bit, so similar tanks with different content are next to each other

But that's just visuals

You can change listing order by simply moving entries around in the file where you add/remove inventory

Same way first 2 tanks are

(Extended oxygen > Extended nitrogen)
(Emergency oxygen > Emergency nitrogen)
etc.

Also, it would make sense if they had different price, because they have different capacity. But if you don't want, you could keep prices like that and I could update them later

[Graugr]

Would be nice to sort them a bit, so similar tanks with different content are next to each other

But that's just visuals

You can change listing order by simply moving entries around in the file where you add/remove inventory

Same way first 2 tanks are

(Extended oxygen > Extended nitrogen) (Emergency oxygen > Emergency nitrogen) etc.

Also, it would make sense if they had different price, because they have different capacity. But if you don't want, you could keep prices like that and I could update them later

it's sorted, regular-emergency, oxygen-nitrogen.
different prices do not make sense, all cylinders are made using the same technology, only the amount of material and gas inside the cylinders changes. im checked sale price/ its 13-14 bucks for any of tank