Mermaid origins

* Mod configuration:

It's necessary to manually modify the mermod-server.toml file in versions earlier than v1.1.1

*Features

- Improves night vision features by avoiding the 0 second, generating little moments without night vision effect (more noticeable using shaders, at night or underwater).

- Prevents a bug where status effects remain at 0 seconds indefinitely.

- Allows players to configure particles and status effects individually via keybinds.

- Prevents tridents with the Loyalty enchantment from falling into the void.

- Mermaids can provide oxygen to drowning players through face-to-face interaction. This setting can be disabled individually or via a Gamerule.

- A new feature (introduced in version 1.1) that prevents the mermaid from sinking / descending vertically while in the water. This feature is activated by swimming upwards or by pressing the space key (by default).

*Content:

- Items:

Mermaid Scale: Introducing a new item that can be found in a buried chest, randomly dropped by the mermaid-player over time, also a drowned can spawn with one in their off-hand.

Bottled Mermaid Tear: New item obtainable from treasure chests on sunken ships, can also be purchased from traders. When used, it provides aquatic breathing for 3 minutes.

Potion Of Mermaid Grace: It's a potion that grants the mermaid grace effect, needs to be crafted with a Mermaid Scale and a Bottled Mermaid Tear in a brewing stand.

- Effects:

Mermaid grace: Creates an effect status in the water that allows the player to be static in the water without sink, even if absorbed by water currents.

* Controls:

[N] for Underwater vision: [Mermod default] / Underwater only / Disabled 

[B] for Particles: [Enabled] / Disabled

[V] for Mouth-to-Mouth: [Enabled] / Disabled

* GameRules:

mermaidMouthToMouthBreathing: [True] / False

tridentDiesInTheVoid: True / [False]