Add B programming language

[aceinetx]

Added the B programming language (C predecessor)

Checklist:

• I am adding a new language.
  • The extension of the new language is used in hundreds of repositories on GitHub.com.
    • Search results for each extension:
      • https://github.com/search?type=code&q=NOT+is%3Afork+path%3A*.b+extrn
  • I have included a real-world usage sample for all extensions added in this PR:
    • Sample source(s):
      • https://github.com/bext-lang/b/blob/main/examples/duffs_device.b
      • https://github.com/aceinetx/blang/blob/master/examples/curses.b
      • https://github.com/aceinetx/blang/blob/master/examples/carrying_statement.b
      • https://github.com/aceinetx/blang/blob/master/examples/curses.b
      • https://www.nokia.com/bell-labs/about/dennis-m-ritchie/kbman.html
      • https://www.nokia.com/bell-labs/about/dennis-m-ritchie/bref.html
    • Sample license(s):
      • MIT
      • AGPL-3.0
  • I have included a syntax highlighting grammar
  • I have added a color
    • Hex value: #da7666
    • Rationale: B doesn't have an official logo (or really any logo, even unofficial) so it's mostly chosen on random
  • I have updated the heuristics to distinguish my language from others using the same extension.