Add p1061 (#3521)

* Add p1061

Closes #3519

etc/config/c++.amazon.properties

@@ -305,7 +305,7 @@ compiler.clang1400.semver=14.0.0
 compiler.clang1400.options=--gcc-toolchain=/opt/compiler-explorer/gcc-11.2.0
 compiler.clang1400.ldPath=${exePath}/../lib|${exePath}/../lib/x86_64-unknown-linux-gnu
 
-group.clangx86trunk.compilers=clang_trunk:clang_assertions_trunk:clang_concepts:clang_p1144:clang_autonsdmi:clang_lifetime:clang_parmexpr:clang_patmat:clang_embed:clang_dang:clang_reflection
+group.clangx86trunk.compilers=clang_trunk:clang_assertions_trunk:clang_concepts:clang_p1144:clang_autonsdmi:clang_lifetime:clang_p1061:clang_parmexpr:clang_patmat:clang_embed:clang_dang:clang_reflection
 group.clangx86trunk.intelAsm=-mllvm --x86-asm-syntax=intel
 group.clangx86trunk.options=--gcc-toolchain=/opt/compiler-explorer/gcc-snapshot
 group.clangx86trunk.demangler=/opt/compiler-explorer/gcc-snapshot/bin/c++filt
@@ -339,6 +339,9 @@ compiler.clang_lifetime.exe=/opt/compiler-explorer/clang-lifetime-trunk/bin/clan
 compiler.clang_lifetime.semver=(experimental -Wlifetime)
 compiler.clang_lifetime.options=--gcc-toolchain=/opt/compiler-explorer/gcc-8.2.0 -Wlifetime
 compiler.clang_lifetime.notification=Lifetime profile checker based on Herb Sutter's paper; see <a href="https://herbsutter.com/2018/09/20/lifetime-profile-v1-0-posted/" target="_blank" rel="noopener noreferrer">this blog post <sup><small class="fas fa-external-link-alt opens-new-window" title="Opens in a new window"></small></sup></a> for more information
+compiler.clang_p1061.exe=/opt/compiler-explorer/clang-p1061-trunk/bin/clang++
+compiler.clang_p1061.semver=(experimental P1061)
+compiler.clang_p1061.notification=Experimental Structure Bindings can introduce a Pack; see <a href="https://wg21.link/P1061" target="_blank" rel="noopener noreferrer">P1061<sup><small class="fas fa-external-link-alt opens-new-window" title="Opens in a new window"></small></sup></a>
 compiler.clang_parmexpr.exe=/opt/compiler-explorer/clang-parmexpr-trunk/bin/clang++
 compiler.clang_parmexpr.semver=(experimental P1221)
 compiler.clang_parmexpr.options=-std=c++2a -stdlib=libc++