Introduce config support to each bench.

[Xieyt]

• Support configuration of fm created bench using a config file.
• The config file name will be bench_config.toml will stored in root of each bench.
• Config file will be created after each bench creation.
• As of now bench_config.toml supports this attributes:

  
  # name of the site
  name = "example.com"

when true enables frappe developer mode

developer_mode = false

when true enables admin tools mode

admin_tools = false

"prod" -> for bench prod environment

"dev" -> for bench dev environment

environment_type = "prod"

enable ssl if defined

[ssl]

ssl_type -> "letsencrypt" / "disable"

ssl_type = "letsencrypt"

only applicable if ssl_type is "letsencrypt"

hsts = "off"

only applicable if ssl_type is "letsencrypt"

email = "exampl@example.com"