esvsearch: split esv search code into separate program

Requires rewiring the build system to accommodate for two executables.

Fixes: https://todo.sr.ht/~jeremy/esv/4

esv.d

@@ -45,7 +45,6 @@ int    lFlag;        /* line length */
 bool   lFlagSpecified;
 bool   nFlag, NFlag; /* verse numbers */
 bool   rFlag, RFlag; /* passage references */
-string sFlag;        /* search passages */
 bool   VFlag;        /* show version */
 
 int
@@ -73,7 +72,6 @@ main(string[] args)
 			"l", &onLineLength,
 			"N", &NFlag, "n", &nFlag,
 			"R", &RFlag, "r", &rFlag,
-			"s", &sFlag,
 			"V", &VFlag,
 		);
 	} catch (GetOptException e) {
@@ -85,14 +83,9 @@ main(string[] args)
 		return 0;
 	}
 
-	if (sFlag != "") {
-		/* skip argument validation */
-		goto config;
-	}
-
 	if (args.length < 3) {
 		stderr.writefln(
-			"usage: %s [-aFfHhNnRrV] [-c config] [-l length] [-s query] book verses",
+			"usage: %s [-aFfHhNnRrV] [-c config] [-l length] book verses",
 				baseName(args[0]));
 		return 1;
 	}
@@ -134,8 +127,6 @@ key = %s
 		die(e.msg);
 	}
 
-	enforceDie(!(aFlag && sFlag), "cannot specify both -a and -s flags");
-
 	apiKey = ini["api"].key("key");
 	enforceDie(apiKey != null,
 		"API key not present in configuration file; cannot proceed");
@@ -168,16 +159,6 @@ key = %s
 		return 0;
 	}
 
-	if (sFlag) {
-		try
-			writeln(esv.searchFormat(sFlag));
-		catch (ESVException)
-			die("no results for search");
-		catch (CurlException e)
-			die(e.msg);
-		return 0;
-	}
-
 	esv.extraParameters = ini["api"].key("parameters", "");
 
 	/* Get [passage] keys */