add completion scripts for command line autocomplete

Makefile

@@ -1,3 +1,5 @@
+SHELL := /bin/bash
+
 tidy:
 	go mod tidy
 
@@ -27,4 +29,34 @@ tw:
 watch:
 	@make -j2 dev tw
 
-.PHONY: tidy clean build cli tui web dev tw
+completions:
+	@go build -o ./bin/pm ./cmd/pm
+	@mkdir -p ./bin
+	@./bin/pm completion bash > ./bin/pm_bash.sh
+	@./bin/pm completion zsh > ./bin/pm_zsh.sh
+	@./bin/pm completion fish > ./bin/pm_fish.sh
+	@./bin/pm completion powershell > ./bin/pm_powershell.ps1
+
+install-bash-temp: completions
+	@go install ./cmd/pm
+	@source ./bin/pm_bash.sh
+
+install-zsh-temp: completions
+	@go install ./cmd/pm
+	@source ./bin/pm_zsh.sh
+
+install-fish-temp: completions
+	@go install ./cmd/pm
+	@source ./bin/pm_fish.sh
+
+install-powershell-temp: completions
+	@go install ./cmd/pm
+	@source ./bin/pm_powershell.ps1
+
+
+install-cli: completions
+	@go install ./cmd/pm
+	@sudo cp ./bin/pm_bash.sh /etc/bash_completion.d/pm
+
+
+.PHONY: tidy clean build cli tui web dev tw completions install-bash-temp install-zsh-temp install-fish-temp install-powershell-temp install-cli