conf.py: define new *_path roles

Defines three new bitbake_path, meta_yocto_path, and oecore_path roles
that can be used to quickly reference a file or directory in one of
those repositories and link to our web interface for the path, e.g.
:oecore_path:`meta/conf/bitbake.conf`.

(From yocto-docs rev: cc2bb929002ed29fdb2601cf02f47de315656d27)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit 89cf4b98686f6f353811d444f36848410ffd2929)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Paul Barker <paul@pbarker.dev>

documentation/conf.py

@@ -99,6 +99,7 @@ meta_yocto_git = f"{yocto_git_server}/meta-yocto"
 # external links and substitutions
 extlinks = {
     'bitbake_git': (f'{bitbake_git}%s', None),
+    'bitbake_path': (f'{bitbake_git}/tree/%s', '%s'),
     'bitbake_rev': (f'{bitbake_git}/commit/?id=%s', '%.7s'),
     'cve_mitre': ('https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-%s', 'CVE-%s'),
     'cve_nist': ('https://nvd.nist.gov/vuln/detail/CVE-%s', 'CVE-%s'),
@@ -110,11 +111,13 @@ extlinks = {
     'yocto_ab': ('https://autobuilder.yoctoproject.org%s', None),
     'yocto_docs': ('https://docs.yoctoproject.org%s', None),
     'yocto_git': (f'{yocto_git_server}%s', None),
+    'meta_yocto_path': (f'{meta_yocto_git}/tree/%s', '%s'),
     'meta_yocto_rev': (f'{meta_yocto_git}/commit/?id=%s', '%.7s'),
     'yocto_sstate': ('http://sstate.yoctoproject.org%s', None),
     'oe_home': ('https://www.openembedded.org%s', None),
     'oe_lists': ('https://lists.openembedded.org%s', None),
     'oe_git': (f'{oe_git_server}%s', None),
+    'oecore_path': (f'{oecore_git}/tree/%s', '%s'),
     'oecore_rev': (f'{oecore_git}/commit/?id=%s', '%.7s'),
     'oe_wiki': ('https://www.openembedded.org/wiki%s', None),
     'oe_layerindex': ('https://layers.openembedded.org%s', None),