fix: replace nim's std/nre with nim-regex library

[LNSD]

Nim's standard library std/nre loads at runtime (via dlopen()) the libpcre.so.3.

This is not portable enough. This shared library name differs depending on the Linux distributions (e.g., in Linux Arch, the shared object is named libpcre.so.0).

• Replace std/nre with nitely/nim-regex library

For more context, check this forum thread and this comment

[status-im-auto]

Jenkins Builds

❔	Commit	#️⃣	Finished (UTC)	Duration	Platform	Result
✔️	e7516ae	#1	2022-11-02 11:59:19	~16 min	macos	📦bin
✔️	e7516ae	#1	2022-11-02 12:01:11	~18 min	linux	📦bin

[jm-clius]

Don't know much about this issue, but based on forum thread this seems to be the accepted solution.