Add option to enable HDR rendering in 2D #7928

Job	Run time
📊 Static checks / Code style, file formatting, and docs	41s
🍏 iOS / Template (target=template_release)	26m 43s
🍎 macOS / Editor (target=editor, tests=yes)	45m 45s
🍎 macOS / Template (target=template_release)	30m 16s
🏁 Windows / Editor (target=editor, tests=yes)	1h 0m 50s
🏁 Windows / Template (target=template_release)	1h 7m 7s
🐧 Linux / Editor w/ Mono (target=editor)	1h 6m 30s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	1h 23m 15s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	41m 1s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	34m 7s
🐧 Linux / Template w/ Mono (target=template_release)	43m 23s
🐧 Linux / Minimal template (target=template_release, everything disabled)	22m 20s
🤖 Android / Template (target=template_release)	41m 2s
🌐 Web / Template (target=template_release)	25m 38s
🪲 Godot CPP / Build and test Godot CPP	9m 48s
	9h 58m 26s

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