Initial commit of tinyvec_macros v0.1.0 am: e27fd4bfe9 am: 89c35f0dd0 am: 91816080a7 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/tinyvec_macros/+/1533443 MUST ONLY BE SUBMITTED BY AUTOMERGER Change-Id: Idc22ff2dfbdaa566580409901bc0e8c3470994f2