Added file for challange 190

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diff --git a/challenge-190/solathian/perl/ch-1.pl b/challenge-190/solathian/perl/ch-1.pl
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+#!usr/bin/perl -w
+use strict;
+use warnings;
+
+use feature qw(say signatures);
+no warnings qw(experimental);
+
+my $testsEnabled = 0;
+# Task 1: Capital Detection
+
+# You are given a string with alphabetic characters only: A..Z and a..z.
+
+# Write a script to find out if the usage of Capital is appropriate if it satisfies 
+# at least one of the following rules:
+
+# 1) Only first letter is capital and all others are small.
+# 2) Every letter is small.
+# 3) Every letter is capital.
+
+sub capitalDetect($string)
+{
+    my $returnVal = 0;
+    
+    if( $string =~ /^[A-Z]{1}[a-z]+$/ )
+    {
+        $returnVal = 1;
+    }
+    elsif( $string =~ /^[a-z]+$/ )  # not letting empty string to be valid
+    {
+        $returnVal = 1;
+    }
+    elsif( $string =~ /^[A-Z]+$/ )  # not letting empty string to be valid
+    {
+        $returnVal = 1;
+    }
+    
+    return $returnVal;
+}
+
+# Examples:
+my $test0   = 'Perl';       #   1
+my $test1   = 'TPF';        #   1
+my $test2   = 'PyThon';     #   0
+my $test3   = 'raku';       #   1
+
+say capitalDetect($test0)   if($testsEnabled);
+say capitalDetect($test1)   if($testsEnabled);
+say capitalDetect($test2)   if($testsEnabled);
+say capitalDetect($test3)   if($testsEnabled);