Use SDL for joypad input on Linux #186

Job	Run time
📊 Static checks / Code style, file formatting, and docs	1m 27s
🍏 iOS / Template (target=template_release)	9m 22s
🍎 macOS / Editor (target=editor, tests=yes)	34m 23s
🐧 Linux / Editor w/ Mono (target=editor)	40m 9s
🍎 macOS / Template (target=template_release, tests=yes)	17m 59s
🐧 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)	46m 28s
🤖 Android / Editor (target=editor)	26m 19s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	37m 23s
🤖 Android / Template arm32 (target=template_release, arch=arm32)	17m 5s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	25m 42s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	31m 19s
🤖 Android / Template arm64 (target=template_release, arch=arm64)	16m 51s
🌐 Web / Template w/o threads (target=template_release, threads=no)	26m 56s
🏁 Windows / Editor (target=editor, tests=yes)	51m 3s
🐧 Linux / Template w/ Mono (target=template_release, tests=yes)	12m 30s
🏁 Windows / Editor w/ clang-cl (target=editor, tests=yes, use_llvm=yes)	44m 41s
🐧 Linux / Minimal template (target=template_release, tests=yes, everything disabled)	4m 7s
🏁 Windows / Template (target=template_release, tests=yes)	37m 30s
🪲 Godot CPP	0s
	8h 1m 14s

Provide feedback