0.19 ->0.20 - 2nd attempt

Summary:
1. Update Cargo.toml to 0.20.0 `rerun_c = { version = "0.20.0", artifact = "staticlib" }`
2. fbcode/common/rust/tools/reindeer/vendor
3. Update fixups for re_video to have "CARGO_PKG_NAME"
3.a. Ran `fbcode/common/rust/tools/reindeer/buckify`
3. `buck2 build fbsource//third-party/rust:rerun_c`
4. `buck2 run fbcode//scripts/shaynefletcher/project/rerun:rerun_test`

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Added custom build rules for re_video and re_sdk due to the introduction of `RE_BUILD_FEATURES`

Reviewed By: ewhitmire

Differential Revision: D66256781

fbshipit-source-id: 2799b719c2b124759979ff6ad8daff8c2ffb998c