CMR-10163: Implement Free text search for collection search

[dmistry1]

Overview

Adds support for free text search functionality for collection search. Users can now search for collections using a query parameter q in GET requests or as part of the JSON body in POST requests.

Key Changes

1. Implemented free text search in the /collections endpoint
2. Added support for the q parameter in both GET and POST requests
3. Modified GraphQL query to include keyword search

Example Usage

GET request:

curl -X GET "http://localhost:3000/stac/PROVIDER/collections?q=MODIS" -H "Accept: application/json"

POST request:

curl -X POST "http://localhost:3000/stac/PROVIDER/collections" \
     -H "Content-Type: application/json" \
     -H "Accept: application/json" \
     -d '{
           "q": "MODIS",
           "limit": 10
         }'

STAC browser:

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.83%. Comparing base (70f1ca3) to head (22a24d5).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #352      +/-   ##
==========================================
+ Coverage   87.73%   87.83%   +0.09%     
==========================================
  Files          23       23              
  Lines        1109     1118       +9     
  Branches      238      241       +3     
==========================================
+ Hits          973      982       +9     
  Misses        136      136              

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