misc: Snapcraft support (#87)

Preliminary shell for supporting a snap

Reviewed-on: #87
Reviewed-by: grumbulon <grumbulon@grumbulon.xyz>

snap/snapcraft.yaml

@@ -0,0 +1,41 @@
+# You may ask yourself, why make a snap?
+# why not?
+
+name: awl
+base: core20
+adopt-info: awl
+license: BSD-3-Clause
+summary: A command-line DNS query tool.
+description: |
+  awl is a command line DNS tool, much like dig and drill.
+
+grade: devel
+confinement: strict
+
+architectures:
+  - build-on: amd64
+  - build-on: arm64
+  - build-on: s390x
+  - build-on: ppc64el
+  - build-on: armhf
+
+parts:
+  awl:
+    build-packages:
+      - scdoc
+    plugin: go
+    source-type: git
+    source: https://git.froth.zone/sam/awl
+    override-pull: |
+      snapcraftctl pull
+      snapcraftctl set-version "$(git describe --always | sed 's/\([^-]*-g\)/r\1/;s/-/./g' || echo 'UNKNOWN')"
+    override-build: |
+      HASH=$(git describe --always | sed 's/\([^-]*-g\)/r\1/;s/-/./g' || echo 'UNKNOWN')+snap make
+      PREFIX=$SNAPCRAFT_PART_INSTALL make install
+
+apps:
+  awl:
+    command: bin/awl
+    completer: share/bash-completion/completions/awl
+    plugs:
+      - network