feat(compl): Add bash completion (#1)

hs

@@ -0,0 +1,40 @@
+_hs()
+{
+    local cur prev
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+
+    local settings_file
+    settings_file=~/'.heidisql/portable_settings.txt'
+    if [[ ! -r "${settings_file}" ]]; then
+        COMPREPLY="$(printf -- '%s' '<File '"${settings_file}"' not readable, nothing to auto-complete>')"
+        return 1
+    fi
+
+    local saved_sessions
+    # Find all saved sessions where NetType is set to '2' aka 'MariaDB or
+    # MySQL (SSH tunnel)'
+    saved_sessions="$(grep -Pio -- '(?<=^Servers\\)[^\\]+(?=\\NetType<\|\|\|>[[:digit:]]<\|\|\|>2)' "${settings_file}" | sort | uniq)"
+
+    # Commands below depend on this IFS
+    local IFS=$'\n'
+
+    if [[ "${prev}" != 'hs' ]]; then
+        return 0
+    fi
+
+    if [[ "${cur}" == * ]]; then
+        # Filter our candidates
+        CANDIDATES=($(compgen -W "${saved_sessions[*]}" -- "${cur}"))
+
+        # Correctly set our candidates to COMPREPLY
+        if [[ "${#CANDIDATES[*]}" -eq '0' ]]; then
+            COMPREPLY=()
+        else
+            COMPREPLY=($(printf ''"'"'%s'"'"'\n' "${CANDIDATES[@]}"))
+        fi
+        return 0
+    fi
+}
+complete -F _hs hs