[#2497, #2642, #2643, #2646] Refactor GuiSelector, use layout attributes for Weapons beam and shields

[oznogon]

GuiSelector:

• Add GuiSelector::overridePopupWidth() function to manually set a minimum width for the popup list of options.
• Scale button height and text size of popup list options down by as much as half if they would otherwise overflow the virtual window height. Should fix [Bug] Beam and shield frequencies < 460THz aren't accessible in GuiSelector popup on non-vertical displays #2646.
• Clip text to the space between the arrow buttons.
• Remove redundant sound effects from arrow button clicks, which are already handled by onMouseUp on the entire GuiSelector rect. Should fix [Bug] Click feedback sound seems louder for language select #2497.

Weapons:

• Add shield controls to the adjacent beam info controls GuiElement container.
• Use layout attributes in beam info controls container.
• Fix Enhancement - Weapons screen - label beam target selector and beam frequency selector #2643.
  • Add labels for beam frequency and beam system target.
  • Use GuiSelector::overridePopupWidth() to widen popup and better fit long system names, such as "Front Shield Generator".
• Dynamically resize elements and change labels to avoid radar overlap on 4:3 or narrower display ratios. This mitigates issues caused by increasing the controls' height.
• Rename beam section to "Beam targeting" to better reflect its purpose.
• Add label for shield controls. Fixes Enhancement - Weapons screen - separatley label shields controls from beam controls #2642.

Before:

Screencast_20251223_021256.webm

After:

Screencast_20251223_020441.webm

[oznogon]

Translators will probably have issues with this that I can't anticipate, and I'd appreciate feedback. Most space-constrained text fields have a worse time in other languages, French in particular.