docs: update README.md and improve code documentation

- Add a new entry for `request_pty` in the README.md file

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

chore: update SSH action version in README files

- Update the version of the `appleboy/ssh-action` to `v1.0.2` in the `README.md` and `README.zh-tw.md` files.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

chore: update appleboy/ssh-action to v1.0.1 in documentation

- Update appleboy/ssh-action from v1.0.0 to v1.0.1 in README.md
- Update appleboy/ssh-action from v0.1.10 to v1.0.1 in README.zh-tw.md

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

docs: update appleboy/ssh-action version in README

- Update the version of `appleboy/ssh-action` from `v0.1.10` to `v0.2.0` in multiple places in the README file.

Signed-off-by: appleboy <appleboy.tw@gmail.com>

chore: update action configuration for greater flexibility (#240)

- Update base image version from `1.6.12` to `1.6.13` in Dockerfile
- Add `envs_format` input with flexible configuration in action.yml
- Add a line to README.md pointing to action.yml for more information

fix #213

chore: improve SSH key handling and documentation

- Upgrade the ssh-action package from version `v0.1.8` to `v0.1.9`
- Update the ssh-keygen command to use `-t ed25519 -a 200 -C` flag with an email address
- Clarify how to pass environment variables as strings in the `env` object
- Add a command to check the fingerprint of an ed25519 key in the README
- Remove duplicate Host entry for `FooServer` in the Chinese version of the README

Signed-off-by: Bo-Yi.Wu <appleboy.tw@gmail.com>

docs: update to v0.1.8 version

Signed-off-by: Bo-Yi.Wu <appleboy.tw@gmail.com>

Fix(envs): set environment variable instead of bash variable (#209)

docs: update to v0.1.6

docs: remove FAQ section

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>