[factorio_development.sh] Added initial implementation of Factorio mod development tool:

- Include basic script structure.
- Implement initialisation command for a new mod.

[TEMPLATE.sh.tpl] Switch to using upper-case names for global variables:

- Makes it easier to differntiate local variables in functions.
- Allows for avoiding "shadowing" of lower-cased/upper-cased variable
names by mistake in functions.

[factorio_manager.sh] Drop sleeps between instance launching when looping:

- For development purposes it is better to relaunch straight away to
reload things like prototype definitions, settings, and localisation
strings (for faster feedback).
- Even with 2-second delay, chances are that the user will miss to
actually get to terminal on time, and making it longer makes it more
annoying when developing mods.

[factorio_manager.sh] Added Bash completion for the script:

- Completion code is kept inline within the script itself, making it
easy to automatically generate it and include in Bash startup files.

[factorio_manager.sh] Added command for repeatedly launching an instance:

- Very helpful when developing mods that modify prototypes and require
instance restarts to make the changes visible.

[factorio_manager.sh] Drop non-jq variant for listing information, improve output:

- No need to complicate the script for non-jq variant.
- Extract as much mod inforamtion as possible from the mod's info.json
file.
- Use mod title for showing a friendlier (non-internal) name to user.

Noticket: [factorio_manager.sh] Add verbose output for info command:

- Lists mod URLs and their descriptions.