[basics/ranges] Improve page

[ntrel]

Add basic definition at the top.
Add links.
Tweak wording.
Add section for array range.
Mention UFCS.
Describe range pipelines.
Show import when using new functions for the first time.

Update: Improve Value vs Reference semantics section.

[ntrel]

Build is failing:

    Building vibe-d:tls 0.9.6: building configuration [openssl]
../../../.dub/packages/openssl/3.3.0/openssl/source/deimos/openssl/opensslv.di(85,9): Error: static assert:  `-45 >= 0` is false
        static assert (build >= 0);
        ^
../../../.dub/packages/openssl/3.3.0/openssl/source/deimos/openssl/opensslv.di(58,35):        instantiated from here: `OpenSSLVersionTemplate!"3.0.13"`
    public alias OpenSSLVersion = OpenSSLVersionTemplate!OpenSSLTextVersion;

I get the same errors locally (so I tested with manual cmark HTML). No idea how to fix.

Already filed here: #382

[ntrel]

Ping?