add manifest for c-ares

Summary: We're working on open sourcing our new `proxygen::coro` library. `proxygen::coro` has a dependency on c-ares, so this diff adds the c-ares manifest file to support oss builds

Reviewed By: mjoras

Differential Revision: D80456516

fbshipit-source-id: 66542834ae41553d875017aaf40238d53715af32

Author: hanidamlaj

build/fbcode_builder/manifests/c-ares

@@ -0,0 +1,13 @@
+[manifest]
+name = c-ares
+
+[download]
+url = https://github.com/c-ares/c-ares/releases/download/v1.34.5/c-ares-1.34.5.tar.gz
+sha256 = 7d935790e9af081c25c495fd13c2cfcda4792983418e96358ef6e7320ee06346
+
+[build]
+builder = cmake
+subdir = c-ares-1.34.5
+
+[cmake.defines]
+CARES_STATIC = ON

build/fbcode_builder/manifests/proxygen

@@ -28,6 +28,7 @@ folly
 fizz
 wangle
 mvfst
+c-ares
 
 [dependencies.test=on]
 googletest