doc: extensions: api_overview: do not hardcode github URL

Add a new extension config value so that repo URL is not hardcoded in
the extension code.

Signed-off-by: Gerard Marull-Paretas <[email protected]>

Author: gmarull

doc/_extensions/zephyr/api_overview.py

@@ -86,7 +86,7 @@ def generate_table(self, toplevel, groups):
 
     def visit_group(self, group, all_groups, rows, indent=0):
         version = since = ""
-        github_uri = "https://github.com/zephyrproject-rtos/zephyr/releases/tag/"
+        github_uri = self.config.api_overview_base_url + "/releases/tag/"
         cdef = group.get_compounddef()[0]
 
         ssects = [
@@ -150,6 +150,7 @@ def visit_group(self, group, all_groups, rows, indent=0):
 
 def setup(app) -> dict[str, Any]:
     app.add_config_value("api_overview_doxygen_out_dir", "", "env")
+    app.add_config_value("api_overview_base_url", "", "env")
 
     app.add_directive("api-overview-table", ApiOverview)
 

doc/conf.py

@@ -364,6 +364,7 @@
 # -- Options for zephyr.api_overview --------------------------------------
 
 api_overview_doxygen_out_dir = str(doxyrunner_projects["zephyr"]["outdir"])
+api_overview_base_url = "https://github.com/zephyrproject-rtos/zephyr"
 
 def setup(app):
     # theme customizations