added fish completions

Author: shilangyu

completion/fish/task.fish

@@ -0,0 +1,24 @@
+function __task_get_tasks --description "Prints all available tasks with their description"
+	task -l | sed '1d' | awk '{ $1=""; print $0 }' | sed 's/: /\t/' | string trim
+end
+
+complete -c task -d 'Runs the specified task(s). Falls back to the "default" task if no task name was specified, or lists all tasks if an unknown task name was 
+specified.' -xa "(__task_get_tasks)"
+
+
+complete -c task -s c -l color     -d 'colored output (default true)'
+complete -c task -s d -l dir       -d 'sets directory of execution'
+complete -c task      -l dry       -d 'compiles and prints tasks in the order that they would be run, without executing them'
+complete -c task -s f -l force     -d 'forces execution even when the task is up-to-date'
+complete -c task -s h -l help      -d 'shows Task usage'
+complete -c task -s i -l init      -d 'creates a new Taskfile.yml in the current folder'
+complete -c task -s l -l list      -d 'lists tasks with description of current Taskfile'
+complete -c task -s o -l output    -d 'sets output style: [interleaved|group|prefixed]' -xa "interleaved group prefixed"
+complete -c task -s p -l parallel  -d 'executes tasks provided on command line in parallel'
+complete -c task -s s -l silent    -d 'disables echoing'
+complete -c task      -l status    -d 'exits with non-zero exit code if any of the given tasks is not up-to-date'
+complete -c task      -l summary   -d 'show summary about a task'
+complete -c task -s t -l taskfile  -d 'choose which Taskfile to run. Defaults to "Taskfile.yml"'
+complete -c task -s v -l verbose   -d 'enables verbose mode'
+complete -c task      -l version   -d 'show Task version'
+complete -c task -s w -l watch     -d 'enables watch of the given task'