This is crude, and doesn't add new weapon points, but it should work. Just copy and paste this into the Cobalt entity file.
TXT
entityType "Frigate"
defaultAutoAttackRange "GravityWell"
defaultAutoAttackOn TRUE
prefersToFocusFire TRUE
usesFighterAttack FALSE
autoJoinFleetDefault TRUE
canBomb FALSE
typeCount 1
frigateRoleType "Light"
statCountType "FrigateLight"
mainViewIcon "MAINVIEWICON_FRIGATE_TECHLIGHT"
picture "PICTURE_FRIGATE_TECHLIGHT"
NameStringID "IDS_FRIGATE_TECHLIGHT_NAME"
DescriptionStringID "IDS_FRIGATE_TECHLIGHT_DESCRIPTION"
counterDescriptionStringID "IDS_COUNTERDESC_FRIGATE_LIGHT"
basePrice
credits 300.000000
metal 55.000000
crystal 0.000000
slotCount 5.000000
BuildTime 24.000000
hasLevels FALSE
ExperiencePointsForDestroying 30.000000
MaxHullPoints 635.000000
MaxShieldPoints 370.000000
HullPointRestoreRate 1.000000
ShieldPointRestoreRate 1.000000
BaseArmorPoints 2.000000
maxMitigation 0.600000
Prerequisites
NumResearchPrerequisites 0
numRandomDebrisLarge 0
numRandomDebrisSmall 5
numSpecificDebris 0
armorType "Medium"
hudIcon "HUDICON_FRIGATE_TECHLIGHT"
smallHudIcon "HUDICONSMALL_FRIGATE_TECHLIGHT"
infoCardIcon "INFOCARDICON_FRIGATE_TECHLIGHT"
minZoomDistanceMult 1.500000
NumWeapons 2
Weapon
WeaponType "Projectile"
damageEnums
AttackType "ANTIHEAVY"
DamageAffectType "AFFECTS_SHIELDS_AND_HULL"
DamageApplyType "BACKLOADED"
DamageType "ENERGY"
WeaponClassType "LASERTECH"
DamagePerBank:FRONT 52.250000
DamagePerBank:BACK 0.000000
DamagePerBank:LEFT 0.000000
DamagePerBank:RIGHT 0.000000
Range 3500.000000
PreBuffCooldownTime 5.500000
CanFireAtFighter FALSE
SynchronizedTargeting TRUE
PointStaggerDelay 0.300000
TravelSpeed 4000.000000
Duration 0.000000
fireConstraintType "CanAlwaysFire"
WeaponEffects
weaponType "Projectile"
burstCount 4
burstDelay 0.250000
muzzleEffectName "Weapon_TechCapitalLaserLight_Muzzle"
muzzleSoundMinRespawnTime 0.400000
muzzleSounds
soundCount 3
sound "WEAPON_TECHCAPITALLASERLIGHT_MUZZLE"
sound "WEAPON_TECHCAPITALLASERLIGHT_MUZZLE_ALT1"
sound "WEAPON_TECHCAPITALLASERLIGHT_MUZZLE_ALT2"
hitEffectName "Weapon_TechCapitalLaserLight_Hit"
hitHullEffectSounds
soundCount 1
sound "WEAPONIMPACT_ENERGYLIGHT_HITHULL"
hitShieldsEffectSounds
soundCount 1
sound "WEAPONIMPACT_GENERICLIGHT_HITSHIELDS"
projectileTravelEffectName "Weapon_TechCapitalLaserLight_Travel"
Weapon
WeaponType "Missile"
damageEnums
AttackType "ANTIMEDIUM"
DamageAffectType "AFFECTS_SHIELDS_AND_HULL"
DamageApplyType "BACKLOADED"
DamageType "PHYSICAL"
WeaponClassType "MISSILE"
DamagePerBank:FRONT 71.500000
DamagePerBank:BACK 0.000000
DamagePerBank:LEFT 0.000000
DamagePerBank:RIGHT 0.000000
Range 9800.000000
PreBuffCooldownTime 6.500000
CanFireAtFighter FALSE
SynchronizedTargeting FALSE
PointStaggerDelay 0.150000
TravelSpeed 1000.000000
Duration 0.000000
fireConstraintType "CanAlwaysFire"
WeaponEffects
weaponType "Missile"
burstCount 1
burstDelay 0.600000
muzzleEffectName "Weapon_TechCapitalMissileHeavy_Muzzle"
muzzleSoundMinRespawnTime 0.500000
muzzleSounds
soundCount 3
sound "WEAPON_TECHCAPITALMISSILEHEAVY_MUZZLE"
sound "WEAPON_TECHCAPITALMISSILEHEAVY_MUZZLE_ALT1"
sound "WEAPON_TECHCAPITALMISSILEHEAVY_MUZZLE_ALT2"
hitEffectName "Weapon_TechCapitalMissileHeavy_Hit"
hitHullEffectSounds
soundCount 1
sound "WEAPONIMPACT_MISSILEHEAVY_HITGENERIC"
hitShieldsEffectSounds
soundCount 1
sound "WEAPONIMPACT_MISSILEHEAVY_HITGENERIC"
missileTravelEffectName "Weapon_TechCapitalMissileHeavy_Travel"
missileStartTurningDistance 250.000000
missileSlowTurnRate 0.708997
missileMaxSlowTurnTime 6.000000
m_weaponIndexForRange 0
firingAlignmentType "Default"
TargetCountPerBank:FRONT 1
TargetCountPerBank:BACK 0
TargetCountPerBank:LEFT 0
TargetCountPerBank:RIGHT 0
canOnlyTargetStructures FALSE
hasWeaponLevels FALSE
mass 2000.000000
ShieldMeshName "Shield_FrigateTechLight"
renderShield TRUE
maxAccelerationLinear 200.000000
maxAccelerationStrafe 10.000000
maxDecelerationLinear 500.000000
maxAccelerationAngular 3.700000
maxDecelerationAngular 9.999996
maxSpeedLinear 825.000000
maxRollRate 2.000000
maxRollAngle 35.000000
squadTypeEntityDef:0 ""
squadAntiMatterCost:0 0.000000
squadTypeEntityDef:1 ""
squadAntiMatterCost:1 0.000000
squadTypeEntityDef:2 ""
squadAntiMatterCost:2 0.000000
squadTypeEntityDef:3 ""
squadAntiMatterCost:3 0.000000
maxNumCommandPoints 0
NumSoundsFor:ONATTACKORDERISSUED 3
SoundID "FRIGATE_TECHLIGHT_ONATTACKORDERISSUED_0"
SoundID "FRIGATE_TECHLIGHT_ONATTACKORDERISSUED_1"
SoundID "FRIGATE_TECHLIGHT_ONATTACKORDERISSUED_2"
NumSoundsFor:ONCREATION 1
SoundID "FRIGATE_TECHLIGHT_ONCREATION"
NumSoundsFor:ONGENERALORDERISSUED 3
SoundID "FRIGATE_TECHLIGHT_ONGENERALORDERISSUED_0"
SoundID "FRIGATE_TECHLIGHT_ONGENERALORDERISSUED_1"
SoundID "FRIGATE_TECHLIGHT_ONGENERALORDERISSUED_2"
NumSoundsFor:ONSELECTED 3
SoundID "FRIGATE_TECHLIGHT_ONSELECTED_0"
SoundID "FRIGATE_TECHLIGHT_ONSELECTED_1"
SoundID "FRIGATE_TECHLIGHT_ONSELECTED_2"
NumSoundsFor:ONSTARTPHASEJUMP 1
SoundID "FRIGATE_TECHLIGHT_ONSTARTPHASEJUMP_0"
MeshNameInfoCount 1
MeshNameInfo
meshName "Frigate_TechLight"
criteriaType "None"
meshNameIncreasedEffectName ""
meshNameDecreasedEffectName ""
ExhaustParticleSystemName "Exhaust_FrigateTechLight"
ExplosionName "Frigate1"
HyperspaceChargingSoundID "HYPERSPACE_CHARGEUP"
HyperspaceTravelSoundID "HYPERSPACE_TRAVEL"
EngineSoundID "ENGINE_TECHCAPITALSHIP"
ability:0 "AbilitySabotageAntiMatter"
ability:1 ""
ability:2 ""
ability:3 ""
ability:4 ""
MaxAntiMatter 200.000000
AntiMatterRestoreRate 0.500000
cargoType "Invalid"
maxCargoCapacity 0.000000
formationRank 0
minShadow 0.100000
maxShadow 0.800000
allegianceDecreasePerRoundtrip 0.000000