feat: move configuration files inside home folder

home/.config/zsh/ohmyzsh/plugins/shell-proxy/README.md

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+# shell-proxy plugin
+
+This a pure user-space program, shell-proxy setter, written in Python3 and Zsh.
+
+To use it, add `shell-proxy` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... shell-proxy)
+```
+
+## Key features
+
+- Supports macOS and Linux (Ubuntu, Archlinux, etc.)
+- Supports git via setting `$GIT_SSH`
+- Supports ssh, sftp, scp, slogin and ssh-copy-id via setting aliases
+- Built-in autocomplete
+
+## Usage
+
+### Method 1
+
+Set `SHELLPROXY_URL` environment variable to the URL of the proxy server:
+
+```sh
+SHELLPROXY_URL="http://127.0.0.1:8123"
+SHELLPROXY_NO_PROXY="localhost,127.0.0.1"
+proxy enable
+```
+
+### Method 2
+
+Write a program file in `$HOME/.config/proxy` so that the proxy URL is defined dynamically.
+Note that the program file must be executable.
+
+Example:
+
+```sh
+#!/bin/bash
+
+# HTTP Proxy
+if [[ "$(uname)" = Darwin ]]; then
+  echo "http://127.0.0.1:6152" # Surge Mac
+else
+  echo "http://127.0.0.1:8123" # polipo
+fi
+
+# No Proxy
+echo "localhost,127.0.0.1"
+```
+
+### Method 3
+
+Use [method 2](#method-2) but define the location of the program file by setting the
+`SHELLPROXY_CONFIG` environment variable:
+
+```sh
+SHELLPROXY_CONFIG="$HOME/.dotfiles/proxy-config"
+```
+
+## Reference
+
+- `$GIT_SSH`: <https://www.git-scm.com/docs/git#Documentation/git.txt-codeGITSSHcode>
+- OpenSSH manual: <https://man.openbsd.org/ssh>
+
+## Maintainer
+
+- [@septs](https://github.com/septs)