Format all the shell scripts with shfmt (helmuthdu#461)

* lilo: format code with `shfmt`

* lilo.automode: format code with `shfmt`

* sharedfuncs: format with `shfmt`

* sharedfuncs_elihw: remove unnecessary semi-colon

* fifo: double quote statements to prevent globbing and word splitting

* fifo: fix SC1102

* fifo: format code with `shfmt`

* add @m0lese in the attention list as a formatting contributor

* add shellcheck github workflow

.github/workflows/shellcheck.yml

@@ -0,0 +1,18 @@
+name: shellcheck
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
+      with:
+        additional_files: "lilo.automode sharedfuncs_elihw"