docs: add release notes for 25.3.0

docs/relnotes.rst

@@ -3,6 +3,7 @@ Release Notes
 
 The release notes summarize what's new or changed in each Mesa release.
 
+-  :doc:`25.3.0 release notes <relnotes/25.3.0>`
 -  :doc:`25.2.5 release notes <relnotes/25.2.5>`
 -  :doc:`25.2.4 release notes <relnotes/25.2.4>`
 -  :doc:`25.2.3 release notes <relnotes/25.2.3>`
@@ -466,6 +467,7 @@ The release notes summarize what's new or changed in each Mesa release.
    :maxdepth: 1
    :hidden:
 
+   25.3.0 <relnotes/25.3.0>
    25.2.5 <relnotes/25.2.5>
    25.2.4 <relnotes/25.2.4>
    25.2.3 <relnotes/25.2.3>

docs/relnotes/new_features.txt

@@ -1,89 +0,0 @@
-EGL_EXT_create_context_robustness support on Panfrost V10+
-GL_ARB_robust_buffer_access_behavior, GL_KHR_robust_buffer_access_behavior and GL_KHR_robustness support on Panfrost
-VK_EXT_mutable_descriptor_type on panvk/v9+
-GL_KHR_robustness on v3d
-VK_ARM_shader_core_builtins on panvk
-VK_KHR_shader_untyped_pointers on anv
-cl_ext_immutable_memory_objects
-VK_KHR_video_encode_intra_refresh on radv
-VK_KHR_video_encode_quantization_map on radv
-GL_ATI_meminfo and GL_NVX_gpu_memory_info on r300
-VK_KHR_shader_untyped_pointers on anv and RADV
-VK_KHR_maintenance8 on NVK
-VK_KHR_maintenance9 on NVK
-cl_khr_semaphore on radeonsi and zink
-cl_khr_external_semaphore on radeonsi and zink
-cl_khr_external_semaphore_sync_fd on radeonsi and zink
-GL_NV_shader_atomic_int64 on radeonsi and Panfrost V9+
-VK_KHR_maintenance7 on panvk/v10+
-VK_KHR_maintenance8 on panvk/v10+
-VK_KHR_maintenance9 on panvk
-VK_AMD_buffer_marker on NVK
-VK_EXT_ycbcr_2plane_444_formats on radv
-Removed VDPAU frontend
-GL_NV_representative_fragment_test on zink
-VK_KHR_maintenance9 on HoneyKrisp
-sparseBinding on panvk/v10+
-sparseResidencyBuffer on panvk/v10+
-Vulkan 1.2 on pvr
-VK_KHR_create_renderpass2 on pvr
-VK_KHR_dedicated_allocation on pvr
-VK_KHR_depth_stencil_resolve on pvr
-VK_KHR_descriptor_update_template on pvr
-VK_KHR_imageless_framebuffer on pvr
-VK_KHR_line_rasterization on pvr
-VK_KHR_maintenance1 on pvr
-VK_KHR_maintenance2 on pvr
-VK_KHR_maintenance3 on pvr
-VK_KHR_multiview on pvr
-VK_KHR_robustness2 on pvr
-VK_KHR_separate_depth_stencil_layouts on pvr
-VK_KHR_shader_draw_parameters on pvr
-VK_KHR_shader_float_controls on pvr
-VK_KHR_shader_subgroup_extended_types on pvr
-VK_KHR_spirv_1_4 on pvr
-VK_KHR_shader_terminate_invocation on pvr
-VK_KHR_swapchain_mutable_format on pvr
-VK_KHR_vertex_attribute_divisor on pvr
-VK_EXT_border_color_swizzle on pvr
-VK_EXT_color_write_enable on pvr
-VK_EXT_custom_border_color on pvr
-VK_EXT_depth_clamp_zero_one on pvr
-VK_EXT_depth_clip_enable on pvr
-VK_EXT_extended_dynamic_state on pvr
-VK_EXT_extended_dynamic_state2 on pvr
-VK_EXT_extended_dynamic_state3 on pvr
-VK_EXT_image_2d_view_of_3d on pvr
-VK_EXT_line_rasterization on pvr
-VK_EXT_physical_device_drm on pvr
-VK_EXT_provoking_vertex on pvr
-VK_EXT_robustness2 on pvr
-VK_EXT_queue_family_foreign on pvr
-VK_EXT_separate_stencil_usage on pvr
-VK_EXT_shader_demote_to_helper_invocation on pvr
-VK_EXT_vertex_attribute_divisor on pvr
-imageCubeArray on pvr
-independentBlend on pvr
-sampleRateShading on pvr
-logicOp on pvr
-drawIndirectFirstInstance on pvr
-alphaToOne on pvr
-samplerAnisotropy on pvr
-shaderStorageImageExtendedFormats on pvr
-shaderStorageImageReadWithoutFormat on pvr
-shaderStorageImageWriteWithoutFormat on pvr
-shaderClipDistance on pvr
-shaderCullDistance on pvr
-VK_EXT_zero_initialize_device_memory on pvr
-VK_KHR_sampler_mirror_clamp_to_edge on pvr
-VK_KHR_shader_non_semantic_info on pvr
-VK_KHR_shader_relaxed_extended_instruction on pvr
-VK_EXT_shader_replicated_composites on pvr
-VK_KHR_device_group_creation on pvr
-VK_KHR_map_memory2 on pvr
-VK_EXT_map_memory_placed on pvr
-VK_KHR_device_group on pvr
-VK_KHR_buffer_device_address on pvr
-GL_EXT_mesh_shader on zink
-VK_KHR_wayland_surface on pvr
-VK_NVX_image_view_handle on NVK