feat: new base16 theme (#31)

Author: @guidocella

themes/base16.ini

@@ -0,0 +1,82 @@
+[base]
+default          = none
+unknown-token    = 1,bold
+commandseparator = none
+redirection      = none
+here-string-tri  = 14
+here-string-text = bg:11
+here-string-var  = 1,bg:11
+exec-descriptor  = 9,bold
+comment          = 8
+correct-subtle   = 12
+incorrect-subtle = 1
+subtle-separator = 12
+subtle-bg        = bg:10
+; secondary        =
+; recursive-base   =
+
+[command-point]
+reserved-word  = 5
+subcommand     = 6
+alias          = 4
+suffix-alias   = 4
+global-alias   = 4,bg:11
+builtin        = 4
+function       = 4
+command        = 4
+precommand     = 6
+hashed-command = 4
+single-sq-bracket = 4
+double-sq-bracket = 4
+double-paren   = 5
+
+[paths]
+path          = 9
+pathseparator =
+path-to-dir   = 9,underline
+globbing      = 6
+globbing-ext  = 6,bold
+
+[brackets]
+paired-bracket = bg:8
+bracket-level-1 = 3,bold
+bracket-level-2 = 6,bold
+bracket-level-3 = 2,bold
+
+[arguments]
+single-hyphen-option   = 3
+double-hyphen-option   = 3
+back-quoted-argument   = none
+single-quoted-argument = 2
+double-quoted-argument = 2
+dollar-quoted-argument = 2
+
+[in-string]
+; backslash in $'...'
+back-dollar-quoted-argument           = 6
+; backslash or $... in "..."
+back-or-dollar-double-quoted-argument = 1
+
+[other]
+variable             = 1
+assign               = none
+assign-array-bracket = 5
+history-expansion    = 6,bold
+
+[math]
+mathvar = 1
+mathnum = 9
+matherr = 1,bold
+
+[for-loop]
+forvar = 1
+fornum = 9
+; operator
+foroper = none
+; separator
+forsep = none
+
+[case]
+case-input       = 1
+case-parentheses = 5
+case-condition   = bg:10