Adds httpx to rosdep database (ros#44364)

* Adds httpx, setproctitle, msgpack-numpy, platformdirs, pyaudio and soundfile

* Fixes focal index for httpx and platformdirs

* Fixes formatting error

* Adds httpx to rosdep

* Removes soundfile

* Adds Alpine for httpx

* Adds Arch to httpx

* Adds rhel for httpx

* Removes rhel unsupported platform

rosdep/python.yaml

@@ -6630,6 +6630,21 @@ python3-httplib2:
   fedora: [python3-httplib2]
   gentoo: [dev-python/httplib2]
   ubuntu: [python3-httplib2]
+python3-httpx:
+  alpine: [httpx]
+  arch: [python-httpx]
+  debian: [python3-httpx]
+  fedora: [python3-httpx]
+  gentoo: [dev-python/httpx]
+  osx:
+    pip:
+      packages: [httpx]
+  rhel: [python3-httpx]
+  ubuntu:
+    '*': [python3-httpx]
+    focal:
+      pip:
+        packages: [httpx]
 python3-hypothesis:
   debian: [python3-hypothesis]
   fedora: [python3-hypothesis]