jlink availability check

replace echo by printf to produce correct start script under Linux.

JVM params for standalone command moved to external var

Now template can produce standalone application with bundled JDK.

now it is possible to set the particular value to major, minor, patch sections when doing version bumping. It may be useful when we want to set patch version to the number of commits from the beginning (e.g. just bump patch `git rev-list HEAD --count`).

scripts for operations: clean, build, install, deploy, outdated, lint, format, test, standalone

project control via Justfile;

cljstyle formatter support;

dotenv files support using direnv utility:

linter clj-kondo support with initial config;

project requirements script for MacOS