Add PathSearch component

- New PatchSearch component
- Allow user to define base directory for search
- Show (using single select list) search results
- Allow user to define search string
- Implement algorithms(start with exact-match and fuzzy-match) from fuzzy search tool (fzf)
- Sample "component path search" and change "component path" to "component path input"
- Fixes #556

spring-shell-core/src/main/resources/org/springframework/shell/component/path-search-default.stg

@@ -0,0 +1,53 @@
+// message
+message(model) ::= <%
+<if(model.message && model.hasMessageLevelError)>
+<({<figures.error>}); format="style-level-error"> <model.message; format="style-level-error">
+<elseif(model.message && model.hasMessageLevelWarn)>
+<({<figures.warning>}); format="style-level-warn"> <model.message; format="style-level-warn">
+<elseif(model.message && model.hasMessageLevelInfo)>
+<({<figures.info>}); format="style-level-info"> <model.message; format="style-level-info">
+<endif>
+%>
+
+// info section after '? xxx'
+info(model) ::= <%
+<if(model.input)>
+<model.input>
+<endif>
+%>
+
+// start '? xxx' shows both running and result
+question_name(model) ::= <<
+<({<figures.questionMark>}); format="style-list-value"> <model.name; format="style-title">
+>>
+
+// render path item
+path_item(item,model) ::= <%
+<if(item.selected)>
+<({<figures.rightPointingQuotation> }); format="style-item-selector"><item.partsText; format={width:<model.terminalWidth>,prefix:2,textStyle:style-item-selector,matchStyle:style-level-warn}>
+<else>
+<("  ")><item.partsText; format={width:<model.terminalWidth>,prefix:2,textStyle:style-item-selector,matchStyle:style-level-warn}>
+<endif>
+%>
+
+// render paths
+paths(model) ::= <<
+<model.pathViewItems:{x|<path_item(x,model)>}; separator="\n">
+>>
+
+// component result
+result(model) ::= <<
+<question_name(model)> <model.resultValue; format="style-value">
+>>
+
+// component is running
+running(model) ::= <<
+<question_name(model)> <info(model)>
+<message(model)>
+<paths(model)>
+>>
+
+// main
+main(model) ::= <<
+<if(model.resultValue)><result(model)><else><running(model)><endif>
+>>