new components id for envoy proxy (#5629)

Signed-off-by: Nwbpcode <comems@msn.com>

docs/en/guides/Component-library-settings.md

@@ -29,6 +29,7 @@ This is a both-way mapping, agent or SDK could use the value(ID) to represent th
 - Lua reserved: [6000, 7000)
 - Python reserved: [7000, 8000)
 - PHP reserved: [8000, 9000)
+- C++ reserved: [9000, 10000)
 
 Example
 ```yaml

oap-server/server-bootstrap/src/main/resources/component-libraries.yml

@@ -477,6 +477,11 @@ Predis:
   id: 8006
   languages: PHP
 
+# C++ components
+# [9000, 10000) for C++ agent
+EnvoyProxy:
+  id: 9000
+  languages: C++
 
 # Component Server mapping defines the server display names of some components
 # e.g.