Fixed security issue in running shell command

• Add bind-keys a and r for showing all themes and rotate themes
• Improved README
• Fixed issues

Fixed path issues which caused glamour.tmux failed to run as one TPM plugin.

New features

• Bind keys 'a' and 'r'. The key 'a' is to show all existing themes. The key 'r' is to rotate all existing themes.
• Add option 'a', 'r', 't'. Options a and r work for bind keys a and r. The option t is to set the target theme. No bind key for it. use in command line.

• Use the new palette file format - C_[base color seq]_[colormap seq]
• Replace legacy color placeholders (names) with new color identities in format C_[base color seq]_[colormap seq]. In new solution for dynamic palette, the color is not stable for any positions. it could be any colors, so it's not appropriate to use color names. instead, it should be color identities.
• Bind keys "g" and "G" to set dynamic theme or reset to the theme in configuration file.
• Remove dependency seaborn from python modules. Use project module function to generate continuous colormap from dark to light.
• Make @base_color_total and @lighter_color_total configurable for advanced usage. By setting those options, the user need to take care of the template theme file and configuration file also to make sure the correct color identities are used.

The first solution for random color generation

The base colours for different sections are predefined. The random is in the colour domain rather than arbitrarily random.
Therefore, for example, the background colour of the status-left is always red colour or similar colour.

This release includes all the main features.

The customized configuration file glamour.yaml can be in $XDG_CONFIG_HOME (default: $HOME/.config)
Dynamic themes can be generated and applied by "-d" to glamour.tmux script.
User can manually create a customised theme in all status line components.
Tested on Tmux 3.2a

glamour.tmux aims to provide beautiful tmux theme for users.

this is the first workable version, including below features:

1. Configuration for tmux options and status line in yaml file.
2. Provide default palette
3. Support dynamic palette generation
4. Color placeholders used in config file and template theme file.
5. Both simple configuration and complex customized configuration are possible
6. Palette is optional, if not want to use palette, then replace color place holders with actual color hex code in either config file or template theme file.