feat: Opacity effect and missile in options

[kokekanon]

issue of "roriscrave" in otland https://otland.net/threads/need-otc-programmer-50u.287225/

PS: First time I make a PR

PS2: I don't know much about cpp, gesior gave the solution,

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Behaviour

Actual

Do this and that doesn't happens

Expected

Do this and that happens

Fixes

# (issue)

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested

• Test A

Test Configuration:

• Server Version: 8.6
• Client: Main mehah
• Operating System: win10 x64

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I checked the PR checks reports
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

bandicam.2023-12-13.14-52-26-382.mp4

[gesior]

I think it should be setEffectAlpha, not setAlphaEffect to follow OTC naming convention - same for Missile.
I will commit 'tmpColor optimisation' in few days. I don't have access to PC now.

[csantbr]

I suggest keeping the OTUI spacing standard.

[conde2]

@csantbr this pull request can be approve, as soon as you approve it I will merge to main branch.

All good now. Thanks for the review =)