Add a spec for "Snippets" (#17329)

This specs out a lot of plans for snippets. We've already got these in
the sxnui as "tasks", but we can do so very much more.

This spec is a few years old now, but it's time for it to get promoted
out of my draft branch.

References: 
* #1595
* #7039
* #3121
* #10436
* #12927
* #12857
* #5790
* #15845

---------

Co-authored-by: Dustin L. Howett <[email protected]>

Author: zadjii-msft

.github/actions/spelling/allow/allow.txt

@@ -50,6 +50,7 @@ perlw
 postmodern
 Powerline
 ptys
+pwn
 pwshw
 qof
 qps
@@ -80,6 +81,7 @@ und
 vsdevcmd
 westus
 workarounds
+wtconfig
 XBox
 YBox
 yeru

doc/specs/#1595 - Suggestions UI/Snippets.md

@@ -0,0 +1,45 @@
+import yaml
+import json
+import sys
+import os
+
+def parse_yaml_files(tool, directory):
+    json_data = {}
+    json_data["name"] = f"{tool}..."
+    json_data["commands"] = []
+
+    for filename in os.listdir(directory):
+        if filename.endswith(".yaml") or filename.endswith(".yml"):
+            file_path = os.path.join(directory, filename)
+            with open(file_path, 'r', encoding="utf-8") as file:
+                try:
+                    yaml_data = yaml.safe_load(file)
+                    new_obj = {}
+                    command = {}
+                    command["input"] = yaml_data["command"]
+                    command["action"] ="sendInput"
+
+                    new_obj["command"]=command
+                    new_obj["name"] = yaml_data["name"]
+
+                    new_obj["description"] = yaml_data["description"] if "description" in yaml_data else ""
+                    json_data["commands"].append(new_obj)
+                except yaml.YAMLError as e:
+                    print(f"Error parsing {filename}: {e}")
+                    sys.exit(-1)
+    return json_data
+
+def main(directory) -> int:
+    json_data = {}
+    json_data["actions"] = []
+
+    for tool_dir in os.listdir(directory):
+        # print(tool_dir)
+        json_data["actions"].append(parse_yaml_files(tool_dir, os.path.join(directory, tool_dir)))
+    print(json.dumps(json_data, indent=4))
+    return 0
+
+if __name__ == '__main__':
+    # Write this output to something like 
+    # "%localappdata%\Microsoft\Windows Terminal\Fragments\warp-workflows\actions.json"
+    sys.exit(main("d:\\dev\\public\\workflows\\specs"))