infra: Adding label for build files (like Makefile).

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>

.github/autolabeler.yml

diff --git a/.github/autolabeler.yml b/.github/autolabeler.yml
index a6686be..e3c99a4 100644
--- a/.github/autolabeler.yml
+++ b/.github/autolabeler.yml
@@ -2,6 +2,8 @@
 
 files-definition:               ["definition.json"]
 
+files-layout-gds:               ["*Makefile"]
+
 files-layout-gds:               ["*.gds"]
 files-layout-lef-magic:         ["*.magic.lef"]
 files-layout-lef:               ["*.lef"]

.github/labels.yml

diff --git a/.github/labels.yml b/.github/labels.yml
index ac55372..03452bb 100644
--- a/.github/labels.yml
+++ b/.github/labels.yml
@@ -53,6 +53,10 @@
 # File related labels are colored purple: d61dae
 ##########################################################################
 
+- name: "files-build"
+  description: "Issues related to the Makefiles / build infrastructure."
+  color: "d61dae"
+
 - name: "files-definition"
   description: "Issues related to the definition.json provided for each cell."
   color: "d61dae"