LSP: support bash, terraform, yaml

[draxxris]

Description

Requesting support for more languages:

crates/aft/src/lsp/registry.rs

Terraform

Extensions: .tf .tfvars
URL: https://github.com/hashicorp/terraform-ls
Command: terraform-ls server

YAML

Extensions: .yml .yaml
URL: https://github.com/redhat-developer/yaml-language-server
Command: yaml-language-server --stdio

BASH

Extensions: .sh .bash
URL: https://github.com/bash-lsp/bash-language-server
Command: bash-language-server start

Use case

No response