[AUSM] Actually Usable Shader Mod

Release 1.0.4

• Fixed displaced shaderless bloom after enabling and disabling shaders.
• Fixed first-person hand transparency and effects leaking through the hand with shaders enabled.
• Made texture-defined bloom use the dedicated bloom layer, including Random Things luminous blocks without shaders. Removed material-brightness extraction as an alternate bloom source.
• Fixed excess emission on GPOM double slopes and improved contained-block emission handling.
• Improved LittleTiles and CreativeCore vertex-buffer compatibility, including extended vertex layouts and cached render layers.
• Gave the shader menu a dedicated settings-page presentation and consistent top and bottom dirt bars, including when opened in-world.
• Improved Complementary patch selection and luminous-block material configuration.
• Improved Botania sky-rendering compatibility.
• Added terrain/shadow draw batching and optional GPU timing diagnostics.