This PR implements pretty printing of evaluation results consistently
with Juvix syntax. The printed values do not necessarily originate
directly from the source code. All functions/lambdas are printed as
`<fun>`.
The same mechanism is used to implement pretty printing of unmatched
pattern examples.
Juvix REPL now uses the new value printing mechanism to display
evaluation results. Typing `nil` in the REPL will now just display
`nil`. The command `juvix dev repl` still prints raw JuvixCore terms.
* Closes#1957
* Closes#1985
The new `juvix dev repl` command is a copy of the `juvix repl` with the
addition of `--no-disambiguate` flag that is present on the `juvix dev
core from-concrete` command.
The `juvix repl` command now does not have the `--transforms`,
`--show-de-bruijn` flags as these are only relevant for compiler
developers. The eval transforms are always applied.
By default `juvix dev repl` uses the eval transforms. You can override
this by specifying the `-t` flag.
Also we now run `disambiguateNames` transform on the info table in the
`dev repl` (unless the `--no-disambiguate-names` flag is set). This is
so the output of the `juvix dev repl` will match that of `juvix dev core
from-concrete` and also so the output can be parsed by back the core
parser.
* Closes https://github.com/anoma/juvix/issues/1914
