The feature of Bedrock Sun Glare and Sky Color. This is enabled by the `sunlightIntensity` value and `bedrockShading` option in the Visual Improvements settings.

* new configurable parameters
  - int `BedrockifyClientSettings#sunlightIntensity`: 0 - 100, default 50

* update `lang/en_us.json`
  - edit `bedrockify.options.bedrockShading`
  - add `bedrockify.options.sunlightIntensity`
  - add tooltip texts:
    + `bedrockify.options.bedrockShading.tooltip`
    + `bedrockify.options.sunlightIntensity.tooltip`

* update `BedrockifyClientSettings`
  - add a field `sunlightIntensity`

* update `SettingsGUI`
  - add tooltip for the options:
    + `bedrockShading`
    + `sunlightIntensity`

* registered new mixins
  - `mixin.client.features.bedrockShading.sunGlare.ClientWorldMixin`
    + to modify the Sky color
  - `mixin.client.features.bedrockShading.sunGlare.WorldRendererMixin`
    + to modify the Sun radius

* moved mixins
  - `mixin.client.features.bedrockShading.AbstractQuadRendererMixin` -> `lightBlock.AbstractQuadRendererMixin`
  - `mixin.client.features.bedrockShading.BlockModelRendererMixin` -> `lightBlock.BlockModelRendererMixin`
  - `mixin.client.features.bedrockShading.FluidRendererMixin` -> `lightBlock.FluidRendererMixin`

* new files
  - `client.features.bedrockShading.BedrockSunGlareShading`
    + helper class that calculate angle diff

Make it compatible with shader mods.

* update `BedrockSunGlareShading`
  - inner classes:
    + enum `ShaderState`: shows the state of custom shader
    + class `ClassMethodHolder`: holds class name, method name, args and predicate
  - fields:
    + ShaderState `shaderState`: to determine the state of custom shader
    + Map `MOD_ID_CLASS_MAP`: uses with Reflection
  - methods:
    + void `reloadCustomShaderState`: notifies changed the shader state
    + boolean `isEnabled` -> `shouldApplyShading`: gets whether can apply this feature
    + ShaderState `fetchShaderStateInternal`: gets the state of custom shader

* update `mixin.client.features.bedrockShading.sunGlare.WorldRendererMixin`
  - new method `bedrockify$reloadWorldRendererCallback`: to reload the state of custom shader

Adds a test case to be compatible with Iris shaders using Reflection.

* update dependencies
  - `build.gradle`
    + fabric loom 1.1-SNAPSHOT
    + add a sourceSet of the test
    + add Modrinth's maven repo
    + add Iris, JUnit
  - `gradle.properties`
    + add a property of Iris version

* new files
  - `test.client.features.bedrockShading.sunGlare.IrisCompatTest`
    + > ./gradlew test

Update the sun vector after client tick due to the sun does not move so fast.

Update the dot product only once when executed `WorldRenderer#renderSky`.

* update `BedrockSunGlareShading`
  - fields:
    + float `sunAngleDiff`
    + Vector3f `sunVector3f`
    + MinecraftClient `client`
  - methods:
    + void `tick`
    + void `updateAngleDiff`
    + static float `getSunAngleDiffClamped(float)` -> float `getSunAngleDiff()`

* update `BedrockifyClient`
  - register a new method in `END_CLIENT_TICK`:
    + `BedrockSunGlareShading#tick`

* update `WorldRendererMixin`
  - method name has changed: `bedrockify$storeSunAngleDiff` -> `bedrockify$updateSunAngleDiff`
  - mixin injection point has changed: `HEAD` -> `BEFORE_INVOKE` target = `ClientWorld#getSkyColor`

* update `en_us.json`
  - the word "vanilla rendering" might not be user friendly

* update `IrisCompatTest.java`
  - add JavaDoc
  - add affected class info to error message

* update `BedrockSunGlareShading.java`
  - update JavaDoc
  - add new const: ClassMethodHolder `ClassMethodHolder#CONDITION_TRUE`

* update `ClientWorldMixin.java`
  - does not require to extend super class