This introduces the ability to split asm strings into tokens and assign a type to them.
This means:
* Each asm strings is assigned a list of tokens. Each token points to a sub-string.
* A token has a type attached which describes it (e.g. register token, operator token, mnemonic token etc.)
* A generic parsing method is introduced which splits an asm string into tokens. The pattern it parses is `<mnem> <op> <op> ...`.
* Instead of the generic method, plugins can create the token strings on their own.
* An API method was introduced to help plugins implement their own parsing methods via regex patterns.
* Custom token strings are stored in `RzAsmOp.asm_toks`
Additionally the coloring of asm strings is now exclusively done via the token strings.
* For this a function was added to colorize tokenized asm strings according to their token types.
* Refactor `rz_core_theme_nextpal()`
* Add tests for `ecp`, `ecn` and `ecoj`
* Add braces to avoid declaration after the label
* Use `RzCmdStateOutput` in `eco`
* Fix the output of the test for `ecoj`
* Introduce `RzConsPalSeekMode` and refactor `nextpal_item`
* Rename the APIs related to themes
* Rename `rz_core_get_theme` to `rz_core_theme_get`
* Rename `rz_core_load_theme` to `rz_core_theme_load`
* Rename `rz_core_list_themes` to `rz_core_theme_list`
* Add `curtheme` to `RzCore`
* Eliminate all global variables in cmd_eval.c
* Put the loop outside the `switch` in
`rz_cmd_eval_color_load_theme_handler`
* Remove `getNext` variable and use the `RzListIter`'s `p` variable
* Sort the list of loadable themes
* Use a normal `strcmp` as the comparator function while sorting themes
* Convert `ec` to the rzshell
* Port the `echo` command
* Make the `color` argument optional for `ecHw`
* Remove `rz_core_echo`
* Make `echo` a part of `e` commands
* Add tests for `eco` and `ecHw`
* Move the definition of `bool2status` to `cmd_eval.c`
* Fix `ecHj` and add a test for it
* Added function diffing and graph diffing (json and dot only)
* Added tests for new functions and graph diffing
* diff graph more clear
* enforce same colors everywhere.
* using realsize for calculating function size
* renaming unconditional jump color name
* fixed memory issues and weird behaviour
