Build on main branch tags only (#394)

* Build on main branch tags only

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

support different pyodide versions (#328)

* add PyLoader class

* create global loader during app creation time and remove it when pyscript loading operations are done

* make the loader global and open/close when apps is starting. Also add concept of app config so users can set if they want to autoclose the loader of handle it themselves

* add pyconfig file

* auto add global config if there's no config set in the page

* export initializer type

* define type for config

* move initialization out of svelte file, into app config

* change runtimes from strings to objects

* fix typo