[Do not merge] Adds proof-of-concept for man page

Makefile

@@ -1,6 +1,6 @@
-.PHONY: all gen build
+.PHONY: all gen build man
 
-all: gen build
+all: gen build man
 
 gen: temporalcli/commands.gen.go
 
@@ -9,3 +9,17 @@ temporalcli/commands.gen.go: temporalcli/commandsgen/commands.yml
 
 build:
 	go build ./cmd/temporal
+
+man: build
+	@mkdir -p man
+	@if [ -f ./temporal ]; then \
+		help2man \
+		    -N \
+		    --name="1.1.0 (Server 1.25.0, UI 2.30.3)" \
+		    --version-string="temporal CLI" \
+		    --manual="temporal CLI" \
+		    --section=7 ./temporal > man/temporal.7; \
+	else \
+		echo "Error: './temporal' executable not found."; \
+		exit 1; \
+	fi

man/temporal.7

@@ -0,0 +1,84 @@
+.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.49.3.
+.TH TEMPORAL "7" "October 2024" "temporal CLI" "temporal CLI"
+.SH NAME
+temporal \- 1.1.0 (Server 1.25.0, UI 2.30.3)
+.SH DESCRIPTION
+The Temporal CLI manages, monitors, and debugs Temporal apps. It lets you run
+a local Temporal Service, start Workflow Executions, pass messages to running
+Workflows, inspect state, and more.
+.SS "* Start a local development service:"
+.IP
+`temporal server start\-dev`
+.SS "* View help: pass `--help` to any command:"
+.IP
+`temporal activity complete \fB\-\-help\fR`
+.SS "Usage:"
+.IP
+temporal [command]
+.SS "Available Commands:"
+.TP
+activity
+Complete or fail an Activity
+.TP
+batch
+Manage running batch jobs
+.TP
+completion
+Generate the autocompletion script for the specified shell
+.TP
+env
+Manage environments
+.TP
+help
+Help about any command
+.TP
+operator
+Manage Temporal deployments
+.TP
+schedule
+Perform operations on Schedules
+.TP
+server
+Run Temporal Server
+.TP
+task\-queue
+Manage Task Queues
+.TP
+workflow
+Start, list, and operate on Workflows
+.SS "Flags:"
+.TP
+\fB\-\-color\fR string
+Output coloring. Accepted values: always, never, auto. (default "auto")
+.TP
+\fB\-\-command\-timeout\fR duration
+Timeout for the span of a command. (default 0s)
+.TP
+\fB\-\-env\fR ENV
+Active environment name (ENV). (default "default")
+.TP
+\fB\-\-env\-file\fR $HOME/.config/temporalio/temporal.yaml
+Path to environment settings file. (defaults to $HOME/.config/temporalio/temporal.yaml).
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+help for temporal
+.TP
+\fB\-\-log\-format\fR string
+Log format. Options are: text, json. (default "text")
+.TP
+\fB\-\-log\-level\fR server start\-dev
+Log level. Default is "info" for most commands and "warn" for server start\-dev. Accepted values: debug, info, warn, error, never. (default "info")
+.TP
+\fB\-\-no\-json\-shorthand\-payloads\fR
+Raw payload output, even if they are JSON.
+.TP
+\fB\-o\fR, \fB\-\-output\fR string
+Non\-logging data output format. Accepted values: text, json, jsonl, none. (default "text")
+.TP
+\fB\-\-time\-format\fR string
+Time format. Accepted values: relative, iso, raw. (default "relative")
+.TP
+\fB\-v\fR, \fB\-\-version\fR
+version for temporal
+.PP
+Use "temporal [command] \fB\-\-help\fR" for more information about a command.